<section id="functions-grouped-by-er-function-with-examples">
<h1>Functions Grouped by, er, Function with Examples<a class="headerlink" href="#functions-grouped-by-er-function-with-examples" title="Permalink to this headline">¶</a></h1>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>from notebook_preamble import J, V
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="kn">from</span> <span class="nn">notebook_preamble</span> <span class="kn">import</span> <span class="n">J</span><span class="p">,</span> <span class="n">V</span>
</pre></div>
</div>
<section id="stack-chatter">
it’s “off the shelf” technology.)</p>
<section id="clear">
<h3><code class="docutils literal notranslate"><span class="pre">clear</span></code><a class="headerlink" href="#clear" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('1 2 3 clear')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'1 2 3 clear'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="p">(</span><span class="n">nothing</span><span class="p">)</span>
</section>
<section id="dup-dupd">
<h3><code class="docutils literal notranslate"><span class="pre">dup</span></code> <code class="docutils literal notranslate"><span class="pre">dupd</span></code><a class="headerlink" href="#dup-dupd" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('1 2 3 dup')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'1 2 3 dup'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">1</span> <span class="mi">2</span> <span class="mi">3</span> <span class="mi">3</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('1 2 3 dupd')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'1 2 3 dupd'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">1</span> <span class="mi">2</span> <span class="mi">2</span> <span class="mi">3</span>
<h3><code class="docutils literal notranslate"><span class="pre">enstacken</span></code> <code class="docutils literal notranslate"><span class="pre">disenstacken</span></code> <code class="docutils literal notranslate"><span class="pre">stack</span></code> <code class="docutils literal notranslate"><span class="pre">unstack</span></code><a class="headerlink" href="#enstacken-disenstacken-stack-unstack" title="Permalink to this headline">¶</a></h3>
<p>(I may have these paired up wrong. I.e. <code class="docutils literal notranslate"><span class="pre">disenstacken</span></code> should be
<code class="docutils literal notranslate"><span class="pre">unstack</span></code> and vice versa.)</p>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('1 2 3 enstacken') # Replace the stack with a quote of itself.
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'1 2 3 enstacken'</span><span class="p">)</span> <span class="c1"># Replace the stack with a quote of itself.</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="p">[</span><span class="mi">3</span> <span class="mi">2</span> <span class="mi">1</span><span class="p">]</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('4 5 6 [3 2 1] disenstacken') # Unpack a list onto the stack.
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'4 5 6 [3 2 1] disenstacken'</span><span class="p">)</span> <span class="c1"># Unpack a list onto the stack.</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">4</span> <span class="mi">5</span> <span class="mi">6</span> <span class="mi">3</span> <span class="mi">2</span> <span class="mi">1</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('1 2 3 stack') # Get the stack on the stack.
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'1 2 3 stack'</span><span class="p">)</span> <span class="c1"># Get the stack on the stack.</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">1</span> <span class="mi">2</span> <span class="mi">3</span> <span class="p">[</span><span class="mi">3</span> <span class="mi">2</span> <span class="mi">1</span><span class="p">]</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('1 2 3 [4 5 6] unstack') # Replace the stack with the list on top.
- # The items appear reversed but they are not,
- # 4 is on the top of both the list and the stack.
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'1 2 3 [4 5 6] unstack'</span><span class="p">)</span> <span class="c1"># Replace the stack with the list on top.</span>
+ <span class="c1"># The items appear reversed but they are not,</span>
+ <span class="c1"># 4 is on the top of both the list and the stack.</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">6</span> <span class="mi">5</span> <span class="mi">4</span>
</section>
<section id="pop-popd-popop">
<h3><code class="docutils literal notranslate"><span class="pre">pop</span></code> <code class="docutils literal notranslate"><span class="pre">popd</span></code> <code class="docutils literal notranslate"><span class="pre">popop</span></code><a class="headerlink" href="#pop-popd-popop" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('1 2 3 pop')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'1 2 3 pop'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">1</span> <span class="mi">2</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('1 2 3 popd')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'1 2 3 popd'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">1</span> <span class="mi">3</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('1 2 3 popop')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'1 2 3 popop'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">1</span>
<h3><code class="docutils literal notranslate"><span class="pre">roll<</span></code> <code class="docutils literal notranslate"><span class="pre">rolldown</span></code> <code class="docutils literal notranslate"><span class="pre">roll></span></code> <code class="docutils literal notranslate"><span class="pre">rollup</span></code><a class="headerlink" href="#roll-rolldown-roll-rollup" title="Permalink to this headline">¶</a></h3>
<p>The “down” and “up” refer to the movement of two of the top three items
(displacing the third.)</p>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('1 2 3 roll<')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'1 2 3 roll<'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">2</span> <span class="mi">3</span> <span class="mi">1</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('1 2 3 roll>')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'1 2 3 roll>'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">3</span> <span class="mi">1</span> <span class="mi">2</span>
</section>
<section id="swap">
<h3><code class="docutils literal notranslate"><span class="pre">swap</span></code><a class="headerlink" href="#swap" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('1 2 3 swap')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'1 2 3 swap'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">1</span> <span class="mi">3</span> <span class="mi">2</span>
</section>
<section id="tuck-over">
<h3><code class="docutils literal notranslate"><span class="pre">tuck</span></code> <code class="docutils literal notranslate"><span class="pre">over</span></code><a class="headerlink" href="#tuck-over" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('1 2 3 tuck')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'1 2 3 tuck'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">1</span> <span class="mi">3</span> <span class="mi">2</span> <span class="mi">3</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('1 2 3 over')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'1 2 3 over'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">1</span> <span class="mi">2</span> <span class="mi">3</span> <span class="mi">2</span>
</section>
<section id="unit-quoted-unquoted">
<h3><code class="docutils literal notranslate"><span class="pre">unit</span></code> <code class="docutils literal notranslate"><span class="pre">quoted</span></code> <code class="docutils literal notranslate"><span class="pre">unquoted</span></code><a class="headerlink" href="#unit-quoted-unquoted" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('1 2 3 unit')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'1 2 3 unit'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">1</span> <span class="mi">2</span> <span class="p">[</span><span class="mi">3</span><span class="p">]</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('1 2 3 quoted')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'1 2 3 quoted'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">1</span> <span class="p">[</span><span class="mi">2</span><span class="p">]</span> <span class="mi">3</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('1 [2] 3 unquoted')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'1 [2] 3 unquoted'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">1</span> <span class="mi">2</span> <span class="mi">3</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>V('1 [dup] 3 unquoted') # Unquoting evaluates. Be aware.
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">V</span><span class="p">(</span><span class="s1">'1 [dup] 3 unquoted'</span><span class="p">)</span> <span class="c1"># Unquoting evaluates. Be aware.</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span> <span class="o">.</span> <span class="mi">1</span> <span class="p">[</span><span class="n">dup</span><span class="p">]</span> <span class="mi">3</span> <span class="n">unquoted</span>
<h2>List words<a class="headerlink" href="#list-words" title="Permalink to this headline">¶</a></h2>
<section id="concat-swoncat-shunt">
<h3><code class="docutils literal notranslate"><span class="pre">concat</span></code> <code class="docutils literal notranslate"><span class="pre">swoncat</span></code> <code class="docutils literal notranslate"><span class="pre">shunt</span></code><a class="headerlink" href="#concat-swoncat-shunt" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[1 2 3] [4 5 6] concat')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[1 2 3] [4 5 6] concat'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="p">[</span><span class="mi">1</span> <span class="mi">2</span> <span class="mi">3</span> <span class="mi">4</span> <span class="mi">5</span> <span class="mi">6</span><span class="p">]</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[1 2 3] [4 5 6] swoncat')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[1 2 3] [4 5 6] swoncat'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="p">[</span><span class="mi">4</span> <span class="mi">5</span> <span class="mi">6</span> <span class="mi">1</span> <span class="mi">2</span> <span class="mi">3</span><span class="p">]</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[1 2 3] [4 5 6] shunt')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[1 2 3] [4 5 6] shunt'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="p">[</span><span class="mi">6</span> <span class="mi">5</span> <span class="mi">4</span> <span class="mi">1</span> <span class="mi">2</span> <span class="mi">3</span><span class="p">]</span>
</section>
<section id="cons-swons-uncons">
<h3><code class="docutils literal notranslate"><span class="pre">cons</span></code> <code class="docutils literal notranslate"><span class="pre">swons</span></code> <code class="docutils literal notranslate"><span class="pre">uncons</span></code><a class="headerlink" href="#cons-swons-uncons" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('1 [2 3] cons')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'1 [2 3] cons'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="p">[</span><span class="mi">1</span> <span class="mi">2</span> <span class="mi">3</span><span class="p">]</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[2 3] 1 swons')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[2 3] 1 swons'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="p">[</span><span class="mi">1</span> <span class="mi">2</span> <span class="mi">3</span><span class="p">]</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[1 2 3] uncons')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[1 2 3] uncons'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">1</span> <span class="p">[</span><span class="mi">2</span> <span class="mi">3</span><span class="p">]</span>
</section>
<section id="first-second-third-rest">
<h3><code class="docutils literal notranslate"><span class="pre">first</span></code> <code class="docutils literal notranslate"><span class="pre">second</span></code> <code class="docutils literal notranslate"><span class="pre">third</span></code> <code class="docutils literal notranslate"><span class="pre">rest</span></code><a class="headerlink" href="#first-second-third-rest" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[1 2 3 4] first')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[1 2 3 4] first'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">1</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[1 2 3 4] second')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[1 2 3 4] second'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">2</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[1 2 3 4] third')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[1 2 3 4] third'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">3</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[1 2 3 4] rest')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[1 2 3 4] rest'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="p">[</span><span class="mi">2</span> <span class="mi">3</span> <span class="mi">4</span><span class="p">]</span>
</section>
<section id="flatten">
<h3><code class="docutils literal notranslate"><span class="pre">flatten</span></code><a class="headerlink" href="#flatten" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[[1] [2 [3] 4] [5 6]] flatten')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[[1] [2 [3] 4] [5 6]] flatten'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="p">[</span><span class="mi">1</span> <span class="mi">2</span> <span class="p">[</span><span class="mi">3</span><span class="p">]</span> <span class="mi">4</span> <span class="mi">5</span> <span class="mi">6</span><span class="p">]</span>
<section id="getitem-at-of-drop-take">
<h3><code class="docutils literal notranslate"><span class="pre">getitem</span></code> <code class="docutils literal notranslate"><span class="pre">at</span></code> <code class="docutils literal notranslate"><span class="pre">of</span></code> <code class="docutils literal notranslate"><span class="pre">drop</span></code> <code class="docutils literal notranslate"><span class="pre">take</span></code><a class="headerlink" href="#getitem-at-of-drop-take" title="Permalink to this headline">¶</a></h3>
<p><code class="docutils literal notranslate"><span class="pre">at</span></code> and <code class="docutils literal notranslate"><span class="pre">getitem</span></code> are the same function. <code class="docutils literal notranslate"><span class="pre">of</span> <span class="pre">==</span> <span class="pre">swap</span> <span class="pre">at</span></code></p>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[10 11 12 13 14] 2 getitem')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[10 11 12 13 14] 2 getitem'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">12</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[1 2 3 4] 0 at')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[1 2 3 4] 0 at'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">1</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('2 [1 2 3 4] of')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'2 [1 2 3 4] of'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">3</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[1 2 3 4] 2 drop')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[1 2 3 4] 2 drop'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="p">[</span><span class="mi">3</span> <span class="mi">4</span><span class="p">]</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[1 2 3 4] 2 take') # reverses the order
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[1 2 3 4] 2 take'</span><span class="p">)</span> <span class="c1"># reverses the order</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="p">[</span><span class="mi">2</span> <span class="mi">1</span><span class="p">]</span>
</section>
<section id="remove">
<h3><code class="docutils literal notranslate"><span class="pre">remove</span></code><a class="headerlink" href="#remove" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[1 2 3 1 4] 1 remove')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[1 2 3 1 4] 1 remove'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="p">[</span><span class="mi">2</span> <span class="mi">3</span> <span class="mi">1</span> <span class="mi">4</span><span class="p">]</span>
</section>
<section id="reverse">
<h3><code class="docutils literal notranslate"><span class="pre">reverse</span></code><a class="headerlink" href="#reverse" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[1 2 3 4] reverse')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[1 2 3 4] reverse'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="p">[</span><span class="mi">4</span> <span class="mi">3</span> <span class="mi">2</span> <span class="mi">1</span><span class="p">]</span>
</section>
<section id="size">
<h3><code class="docutils literal notranslate"><span class="pre">size</span></code><a class="headerlink" href="#size" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[1 1 1 1] size')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[1 1 1 1] size'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">4</span>
<p>“Swap stack” swap the list on the top of the stack for the stack, and
put the old stack on top of the new one. Think of it as a context
switch. Niether of the lists/stacks change their order.</p>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('1 2 3 [4 5 6] swaack')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'1 2 3 [4 5 6] swaack'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">6</span> <span class="mi">5</span> <span class="mi">4</span> <span class="p">[</span><span class="mi">3</span> <span class="mi">2</span> <span class="mi">1</span><span class="p">]</span>
</section>
<section id="choice-select">
<h3><code class="docutils literal notranslate"><span class="pre">choice</span></code> <code class="docutils literal notranslate"><span class="pre">select</span></code><a class="headerlink" href="#choice-select" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('23 9 1 choice')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'23 9 1 choice'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">9</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('23 9 0 choice')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'23 9 0 choice'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">23</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[23 9 7] 1 select') # select is basically getitem, should retire it?
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[23 9 7] 1 select'</span><span class="p">)</span> <span class="c1"># select is basically getitem, should retire it?</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">9</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[23 9 7] 0 select')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[23 9 7] 0 select'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">23</span>
</section>
<section id="zip">
<h3><code class="docutils literal notranslate"><span class="pre">zip</span></code><a class="headerlink" href="#zip" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[1 2 3] [6 5 4] zip')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[1 2 3] [6 5 4] zip'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="p">[[</span><span class="mi">6</span> <span class="mi">1</span><span class="p">]</span> <span class="p">[</span><span class="mi">5</span> <span class="mi">2</span><span class="p">]</span> <span class="p">[</span><span class="mi">4</span> <span class="mi">3</span><span class="p">]]</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[1 2 3] [6 5 4] zip [sum] map')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[1 2 3] [6 5 4] zip [sum] map'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="p">[</span><span class="mi">7</span> <span class="mi">7</span> <span class="mi">7</span><span class="p">]</span>
<h2>Math words<a class="headerlink" href="#math-words" title="Permalink to this headline">¶</a></h2>
<section id="add">
<h3><code class="docutils literal notranslate"><span class="pre">+</span></code> <code class="docutils literal notranslate"><span class="pre">add</span></code><a class="headerlink" href="#add" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('23 9 +')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'23 9 +'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">32</span>
</section>
<section id="sub">
<h3><code class="docutils literal notranslate"><span class="pre">-</span></code> <code class="docutils literal notranslate"><span class="pre">sub</span></code><a class="headerlink" href="#sub" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('23 9 -')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'23 9 -'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">14</span>
</section>
<section id="mul">
<h3><code class="docutils literal notranslate"><span class="pre">*</span></code> <code class="docutils literal notranslate"><span class="pre">mul</span></code><a class="headerlink" href="#mul" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('23 9 *')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'23 9 *'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">207</span>
</section>
<section id="div-floordiv-truediv">
<h3><code class="docutils literal notranslate"><span class="pre">/</span></code> <code class="docutils literal notranslate"><span class="pre">div</span></code> <code class="docutils literal notranslate"><span class="pre">floordiv</span></code> <code class="docutils literal notranslate"><span class="pre">truediv</span></code><a class="headerlink" href="#div-floordiv-truediv" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('23 9 /')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'23 9 /'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mf">2.5555555555555554</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('23 -9 truediv')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'23 -9 truediv'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="o">-</span><span class="mf">2.5555555555555554</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('23 9 div')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'23 9 div'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">2</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('23 9 floordiv')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'23 9 floordiv'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">2</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('23 -9 div')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'23 -9 div'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="o">-</span><span class="mi">3</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('23 -9 floordiv')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'23 -9 floordiv'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="o">-</span><span class="mi">3</span>
</section>
<section id="mod-modulus-rem-remainder">
<h3><code class="docutils literal notranslate"><span class="pre">%</span></code> <code class="docutils literal notranslate"><span class="pre">mod</span></code> <code class="docutils literal notranslate"><span class="pre">modulus</span></code> <code class="docutils literal notranslate"><span class="pre">rem</span></code> <code class="docutils literal notranslate"><span class="pre">remainder</span></code><a class="headerlink" href="#mod-modulus-rem-remainder" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('23 9 %')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'23 9 %'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">5</span>
</section>
<section id="neg">
<h3><code class="docutils literal notranslate"><span class="pre">neg</span></code><a class="headerlink" href="#neg" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('23 neg -5 neg')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'23 neg -5 neg'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="o">-</span><span class="mi">23</span> <span class="mi">5</span>
</section>
<section id="pow">
<h3><code class="docutils literal notranslate"><span class="pre">pow</span></code><a class="headerlink" href="#pow" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('2 10 pow')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'2 10 pow'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">1024</span>
</section>
<section id="sqr-sqrt">
<h3><code class="docutils literal notranslate"><span class="pre">sqr</span></code> <code class="docutils literal notranslate"><span class="pre">sqrt</span></code><a class="headerlink" href="#sqr-sqrt" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('23 sqr')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'23 sqr'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">529</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('23 sqrt')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'23 sqrt'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mf">4.795831523312719</span>
</section>
<section id="succ-pred">
<h3><code class="docutils literal notranslate"><span class="pre">++</span></code> <code class="docutils literal notranslate"><span class="pre">succ</span></code> <code class="docutils literal notranslate"><span class="pre">--</span></code> <code class="docutils literal notranslate"><span class="pre">pred</span></code><a class="headerlink" href="#succ-pred" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('1 ++')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'1 ++'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">2</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('1 --')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'1 --'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">0</span>
</section>
<section id="lshift-rshift">
<h3><code class="docutils literal notranslate"><span class="pre"><<</span></code> <code class="docutils literal notranslate"><span class="pre">lshift</span></code> <code class="docutils literal notranslate"><span class="pre">>></span></code> <code class="docutils literal notranslate"><span class="pre">rshift</span></code><a class="headerlink" href="#lshift-rshift" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('8 1 <<')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'8 1 <<'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">16</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('8 1 >>')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'8 1 >>'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">4</span>
</section>
<section id="average">
<h3><code class="docutils literal notranslate"><span class="pre">average</span></code><a class="headerlink" href="#average" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[1 2 3 5] average')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[1 2 3 5] average'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mf">2.75</span>
</section>
<section id="range-range-to-zero-down-to-zero">
<h3><code class="docutils literal notranslate"><span class="pre">range</span></code> <code class="docutils literal notranslate"><span class="pre">range_to_zero</span></code> <code class="docutils literal notranslate"><span class="pre">down_to_zero</span></code><a class="headerlink" href="#range-range-to-zero-down-to-zero" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('5 range')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'5 range'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="p">[</span><span class="mi">4</span> <span class="mi">3</span> <span class="mi">2</span> <span class="mi">1</span> <span class="mi">0</span><span class="p">]</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('5 range_to_zero')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'5 range_to_zero'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="p">[</span><span class="mi">0</span> <span class="mi">1</span> <span class="mi">2</span> <span class="mi">3</span> <span class="mi">4</span> <span class="mi">5</span><span class="p">]</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('5 down_to_zero')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'5 down_to_zero'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">5</span> <span class="mi">4</span> <span class="mi">3</span> <span class="mi">2</span> <span class="mi">1</span> <span class="mi">0</span>
</section>
<section id="product">
<h3><code class="docutils literal notranslate"><span class="pre">product</span></code><a class="headerlink" href="#product" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[1 2 3 5] product')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[1 2 3 5] product'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">30</span>
</section>
<section id="sum">
<h3><code class="docutils literal notranslate"><span class="pre">sum</span></code><a class="headerlink" href="#sum" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[1 2 3 5] sum')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[1 2 3 5] sum'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">11</span>
</section>
<section id="min">
<h3><code class="docutils literal notranslate"><span class="pre">min</span></code><a class="headerlink" href="#min" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[1 2 3 5] min')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[1 2 3 5] min'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">1</span>
</section>
<section id="gcd">
<h3><code class="docutils literal notranslate"><span class="pre">gcd</span></code><a class="headerlink" href="#gcd" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('45 30 gcd')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'45 30 gcd'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">15</span>
<h3><code class="docutils literal notranslate"><span class="pre">least_fraction</span></code><a class="headerlink" href="#least-fraction" title="Permalink to this headline">¶</a></h3>
<p>If we represent fractions as a quoted pair of integers [q d] this word
reduces them to their … least common factors or whatever.</p>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[45 30] least_fraction')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[45 30] least_fraction'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="p">[</span><span class="mi">3</span> <span class="mi">2</span><span class="p">]</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[23 12] least_fraction')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[23 12] least_fraction'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="p">[</span><span class="mi">23</span> <span class="mi">12</span><span class="p">]</span>
<section id="truthy">
<h3><code class="docutils literal notranslate"><span class="pre">?</span></code> <code class="docutils literal notranslate"><span class="pre">truthy</span></code><a class="headerlink" href="#truthy" title="Permalink to this headline">¶</a></h3>
<p>Get the Boolean value of the item on the top of the stack.</p>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('23 truthy')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'23 truthy'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="kc">True</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[] truthy') # Python semantics.
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[] truthy'</span><span class="p">)</span> <span class="c1"># Python semantics.</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="kc">False</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('0 truthy')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'0 truthy'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="kc">False</span>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span>? == dup truthy
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>V('23 ?')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">V</span><span class="p">(</span><span class="s1">'23 ?'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span> . 23 ?
23 True .
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[] ?')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[] ?'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="p">[]</span> <span class="kc">False</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('0 ?')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'0 ?'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">0</span> <span class="kc">False</span>
</section>
<section id="and">
<h3><code class="docutils literal notranslate"><span class="pre">&</span></code> <code class="docutils literal notranslate"><span class="pre">and</span></code><a class="headerlink" href="#and" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('23 9 &')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'23 9 &'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">1</span>
</section>
<section id="ne">
<h3><code class="docutils literal notranslate"><span class="pre">!=</span></code> <code class="docutils literal notranslate"><span class="pre"><></span></code> <code class="docutils literal notranslate"><span class="pre">ne</span></code><a class="headerlink" href="#ne" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('23 9 !=')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'23 9 !='</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="kc">True</span>
</section>
<section id="xor">
<h3><code class="docutils literal notranslate"><span class="pre">^</span></code> <code class="docutils literal notranslate"><span class="pre">xor</span></code><a class="headerlink" href="#xor" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('1 1 ^')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'1 1 ^'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">0</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('1 0 ^')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'1 0 ^'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">1</span>
<h2>Miscellaneous<a class="headerlink" href="#miscellaneous" title="Permalink to this headline">¶</a></h2>
<section id="help">
<h3><code class="docutils literal notranslate"><span class="pre">help</span></code><a class="headerlink" href="#help" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[help] help')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[help] help'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">Accepts</span> <span class="n">a</span> <span class="n">quoted</span> <span class="n">symbol</span> <span class="n">on</span> <span class="n">the</span> <span class="n">top</span> <span class="n">of</span> <span class="n">the</span> <span class="n">stack</span> <span class="ow">and</span> <span class="n">prints</span> <span class="n">its</span> <span class="n">docs</span><span class="o">.</span>
</section>
<section id="parse">
<h3><code class="docutils literal notranslate"><span class="pre">parse</span></code><a class="headerlink" href="#parse" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[parse] help')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[parse] help'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">Parse</span> <span class="n">the</span> <span class="n">string</span> <span class="n">on</span> <span class="n">the</span> <span class="n">stack</span> <span class="n">to</span> <span class="n">a</span> <span class="n">Joy</span> <span class="n">expression</span><span class="o">.</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('1 "2 [3] dup" parse')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'1 "2 [3] dup" parse'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">1</span> <span class="p">[</span><span class="mi">2</span> <span class="p">[</span><span class="mi">3</span><span class="p">]</span> <span class="n">dup</span><span class="p">]</span>
<section id="run">
<h3><code class="docutils literal notranslate"><span class="pre">run</span></code><a class="headerlink" href="#run" title="Permalink to this headline">¶</a></h3>
<p>Evaluate a quoted Joy sequence.</p>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[1 2 dup + +] run')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[1 2 dup + +] run'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="p">[</span><span class="mi">5</span><span class="p">]</span>
<h2>Combinators<a class="headerlink" href="#combinators" title="Permalink to this headline">¶</a></h2>
<section id="app1-app2-app3">
<h3><code class="docutils literal notranslate"><span class="pre">app1</span></code> <code class="docutils literal notranslate"><span class="pre">app2</span></code> <code class="docutils literal notranslate"><span class="pre">app3</span></code><a class="headerlink" href="#app1-app2-app3" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[app1] help')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[app1] help'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">Given</span> <span class="n">a</span> <span class="n">quoted</span> <span class="n">program</span> <span class="n">on</span> <span class="n">TOS</span> <span class="ow">and</span> <span class="n">anything</span> <span class="k">as</span> <span class="n">the</span> <span class="n">second</span> <span class="n">stack</span> <span class="n">item</span> <span class="n">run</span>
<span class="o">...</span> <span class="p">[</span><span class="n">x</span> <span class="o">...</span><span class="p">]</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="o">.</span> <span class="n">infra</span> <span class="n">first</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('10 4 [sqr *] app1')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'10 4 [sqr *] app1'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">10</span> <span class="mi">160</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('10 3 4 [sqr *] app2')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'10 3 4 [sqr *] app2'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">10</span> <span class="mi">90</span> <span class="mi">160</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[app2] help')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[app2] help'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">Like</span> <span class="n">app1</span> <span class="k">with</span> <span class="n">two</span> <span class="n">items</span><span class="o">.</span>
<span class="p">[</span><span class="n">x</span> <span class="o">...</span><span class="p">]</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="n">infra</span> <span class="n">first</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('10 2 3 4 [sqr *] app3')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'10 2 3 4 [sqr *] app3'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">10</span> <span class="mi">40</span> <span class="mi">90</span> <span class="mi">160</span>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="nb">range</span> <span class="o">==</span> <span class="p">[</span><span class="mi">0</span> <span class="o"><=</span><span class="p">]</span> <span class="p">[</span><span class="mi">1</span> <span class="o">-</span> <span class="n">dup</span><span class="p">]</span> <span class="n">anamorphism</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('3 [0 <=] [1 - dup] anamorphism')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'3 [0 <=] [1 - dup] anamorphism'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="p">[</span><span class="mi">2</span> <span class="mi">1</span> <span class="mi">0</span><span class="p">]</span>
</section>
<section id="branch">
<h3><code class="docutils literal notranslate"><span class="pre">branch</span></code><a class="headerlink" href="#branch" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('3 4 1 [+] [*] branch')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'3 4 1 [+] [*] branch'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">12</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('3 4 0 [+] [*] branch')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'3 4 0 [+] [*] branch'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">7</span>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">cleave</span> <span class="o">==</span> <span class="p">[</span><span class="n">i</span><span class="p">]</span> <span class="n">app2</span> <span class="p">[</span><span class="n">popd</span><span class="p">]</span> <span class="n">dip</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('10 2 [+] [-] cleave')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'10 2 [+] [-] cleave'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">10</span> <span class="mi">12</span> <span class="mi">8</span>
</section>
<section id="dip-dipd-dipdd">
<h3><code class="docutils literal notranslate"><span class="pre">dip</span></code> <code class="docutils literal notranslate"><span class="pre">dipd</span></code> <code class="docutils literal notranslate"><span class="pre">dipdd</span></code><a class="headerlink" href="#dip-dipd-dipdd" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('1 2 3 4 5 [+] dip')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'1 2 3 4 5 [+] dip'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">1</span> <span class="mi">2</span> <span class="mi">7</span> <span class="mi">5</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('1 2 3 4 5 [+] dipd')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'1 2 3 4 5 [+] dipd'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">1</span> <span class="mi">5</span> <span class="mi">4</span> <span class="mi">5</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('1 2 3 4 5 [+] dipdd')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'1 2 3 4 5 [+] dipdd'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">3</span> <span class="mi">3</span> <span class="mi">4</span> <span class="mi">5</span>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">n</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="n">dupdip</span> <span class="o">==</span> <span class="n">n</span> <span class="n">Q</span> <span class="n">n</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>V('23 [++] dupdip *') # N(N + 1)
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">V</span><span class="p">(</span><span class="s1">'23 [++] dupdip *'</span><span class="p">)</span> <span class="c1"># N(N + 1)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span> <span class="o">.</span> <span class="mi">23</span> <span class="p">[</span><span class="o">++</span><span class="p">]</span> <span class="n">dupdip</span> <span class="o">*</span>
</section>
<section id="genrec-primrec">
<h3><code class="docutils literal notranslate"><span class="pre">genrec</span></code> <code class="docutils literal notranslate"><span class="pre">primrec</span></code><a class="headerlink" href="#genrec-primrec" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[genrec] help')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[genrec] help'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">General</span> <span class="n">Recursion</span> <span class="n">Combinator</span><span class="o">.</span>
<span class="p">)</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('3 [1 <=] [] [dup --] [i *] genrec')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'3 [1 <=] [] [dup --] [i *] genrec'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">6</span>
</section>
<section id="i">
<h3><code class="docutils literal notranslate"><span class="pre">i</span></code><a class="headerlink" href="#i" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>V('1 2 3 [+ +] i')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">V</span><span class="p">(</span><span class="s1">'1 2 3 [+ +] i'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span> <span class="o">.</span> <span class="mi">1</span> <span class="mi">2</span> <span class="mi">3</span> <span class="p">[</span><span class="o">+</span> <span class="o">+</span><span class="p">]</span> <span class="n">i</span>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="p">[</span><span class="n">predicate</span><span class="p">]</span> <span class="p">[</span><span class="n">then</span><span class="p">]</span> <span class="p">[</span><span class="k">else</span><span class="p">]</span> <span class="n">ifte</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('1 2 [1] [+] [*] ifte')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'1 2 [1] [+] [*] ifte'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">3</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('1 2 [0] [+] [*] ifte')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'1 2 [0] [+] [*] ifte'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">2</span>
</section>
<section id="infra">
<h3><code class="docutils literal notranslate"><span class="pre">infra</span></code><a class="headerlink" href="#infra" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>V('1 2 3 [4 5 6] [* +] infra')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">V</span><span class="p">(</span><span class="s1">'1 2 3 [4 5 6] [* +] infra'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span> <span class="o">.</span> <span class="mi">1</span> <span class="mi">2</span> <span class="mi">3</span> <span class="p">[</span><span class="mi">4</span> <span class="mi">5</span> <span class="mi">6</span><span class="p">]</span> <span class="p">[</span><span class="o">*</span> <span class="o">+</span><span class="p">]</span> <span class="n">infra</span>
</section>
<section id="loop">
<h3><code class="docutils literal notranslate"><span class="pre">loop</span></code><a class="headerlink" href="#loop" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[loop] help')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[loop] help'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">Basic</span> <span class="n">loop</span> <span class="n">combinator</span><span class="o">.</span>
<span class="o">...</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>V('3 dup [1 - dup] loop')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">V</span><span class="p">(</span><span class="s1">'3 dup [1 - dup] loop'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span> <span class="o">.</span> <span class="mi">3</span> <span class="n">dup</span> <span class="p">[</span><span class="mi">1</span> <span class="o">-</span> <span class="n">dup</span><span class="p">]</span> <span class="n">loop</span>
</section>
<section id="map-pam">
<h3><code class="docutils literal notranslate"><span class="pre">map</span></code> <code class="docutils literal notranslate"><span class="pre">pam</span></code><a class="headerlink" href="#map-pam" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('10 [1 2 3] [*] map')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'10 [1 2 3] [*] map'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">10</span> <span class="p">[</span><span class="mi">10</span> <span class="mi">20</span> <span class="mi">30</span><span class="p">]</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('10 5 [[*][/][+][-]] pam')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'10 5 [[*][/][+][-]] pam'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">10</span> <span class="mi">5</span> <span class="p">[</span><span class="mi">50</span> <span class="mf">2.0</span> <span class="mi">15</span> <span class="mi">5</span><span class="p">]</span>
<h3><code class="docutils literal notranslate"><span class="pre">nullary</span></code> <code class="docutils literal notranslate"><span class="pre">unary</span></code> <code class="docutils literal notranslate"><span class="pre">binary</span></code> <code class="docutils literal notranslate"><span class="pre">ternary</span></code><a class="headerlink" href="#nullary-unary-binary-ternary" title="Permalink to this headline">¶</a></h3>
<p>Run a quoted program enforcing
<a class="reference external" href="https://en.wikipedia.org/wiki/Arity">arity</a>.</p>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('1 2 3 4 5 [+] nullary')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'1 2 3 4 5 [+] nullary'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">1</span> <span class="mi">2</span> <span class="mi">3</span> <span class="mi">4</span> <span class="mi">5</span> <span class="mi">9</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('1 2 3 4 5 [+] unary')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'1 2 3 4 5 [+] unary'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">1</span> <span class="mi">2</span> <span class="mi">3</span> <span class="mi">4</span> <span class="mi">9</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('1 2 3 4 5 [+] binary') # + has arity 2 so this is technically pointless...
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'1 2 3 4 5 [+] binary'</span><span class="p">)</span> <span class="c1"># + has arity 2 so this is technically pointless...</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">1</span> <span class="mi">2</span> <span class="mi">3</span> <span class="mi">9</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('1 2 3 4 5 [+] ternary')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'1 2 3 4 5 [+] ternary'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">1</span> <span class="mi">2</span> <span class="mi">9</span>
</section>
<section id="step">
<h3><code class="docutils literal notranslate"><span class="pre">step</span></code><a class="headerlink" href="#step" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[step] help')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[step] help'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">Run</span> <span class="n">a</span> <span class="n">quoted</span> <span class="n">program</span> <span class="n">on</span> <span class="n">each</span> <span class="n">item</span> <span class="ow">in</span> <span class="n">a</span> <span class="n">sequence</span><span class="o">.</span>
<span class="n">on</span> <span class="n">top</span> <span class="n">of</span> <span class="n">the</span> <span class="n">stack</span><span class="o">.</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>V('0 [1 2 3] [+] step')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">V</span><span class="p">(</span><span class="s1">'0 [1 2 3] [+] step'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span> <span class="o">.</span> <span class="mi">0</span> <span class="p">[</span><span class="mi">1</span> <span class="mi">2</span> <span class="mi">3</span><span class="p">]</span> <span class="p">[</span><span class="o">+</span><span class="p">]</span> <span class="n">step</span>
</section>
<section id="times">
<h3><code class="docutils literal notranslate"><span class="pre">times</span></code><a class="headerlink" href="#times" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>V('3 2 1 2 [+] times')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">V</span><span class="p">(</span><span class="s1">'3 2 1 2 [+] times'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span> <span class="o">.</span> <span class="mi">3</span> <span class="mi">2</span> <span class="mi">1</span> <span class="mi">2</span> <span class="p">[</span><span class="o">+</span><span class="p">]</span> <span class="n">times</span>
</section>
<section id="b">
<h3><code class="docutils literal notranslate"><span class="pre">b</span></code><a class="headerlink" href="#b" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[b] help')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[b] help'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">b</span> <span class="o">==</span> <span class="p">[</span><span class="n">i</span><span class="p">]</span> <span class="n">dip</span> <span class="n">i</span>
<span class="o">...</span> <span class="p">[</span><span class="n">P</span><span class="p">]</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="n">b</span> <span class="o">==</span> <span class="o">...</span> <span class="n">P</span> <span class="n">Q</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>V('1 2 [3] [4] b')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">V</span><span class="p">(</span><span class="s1">'1 2 [3] [4] b'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span> <span class="o">.</span> <span class="mi">1</span> <span class="mi">2</span> <span class="p">[</span><span class="mi">3</span><span class="p">]</span> <span class="p">[</span><span class="mi">4</span><span class="p">]</span> <span class="n">b</span>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="p">[</span><span class="n">predicate</span><span class="p">]</span> <span class="p">[</span><span class="n">body</span><span class="p">]</span> <span class="k">while</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('3 [0 >] [dup --] while')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'3 [0 >] [dup --] while'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">3</span> <span class="mi">2</span> <span class="mi">1</span> <span class="mi">0</span>
</section>
<section id="x">
<h3><code class="docutils literal notranslate"><span class="pre">x</span></code><a class="headerlink" href="#x" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[x] help')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[x] help'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">x</span> <span class="o">==</span> <span class="n">dup</span> <span class="n">i</span>
<span class="o">...</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="n">x</span> <span class="o">=</span> <span class="o">...</span> <span class="p">[</span><span class="n">Q</span><span class="p">]</span> <span class="n">Q</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>V('1 [2] [i 3] x') # Kind of a pointless example.
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">V</span><span class="p">(</span><span class="s1">'1 [2] [i 3] x'</span><span class="p">)</span> <span class="c1"># Kind of a pointless example.</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span> <span class="o">.</span> <span class="mi">1</span> <span class="p">[</span><span class="mi">2</span><span class="p">]</span> <span class="p">[</span><span class="n">i</span> <span class="mi">3</span><span class="p">]</span> <span class="n">x</span>
*arithmetic*</a>
over quote-only datastructures (that is, datastructures that consist
soley of containers, without strings or numbers or anything else.)</p>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[] void')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[] void'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="kc">False</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[[]] void')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[[]] void'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="kc">True</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[[][[]]] void')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[[][[]]] void'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="kc">True</span>
</pre></div>
</div>
-<div class="highlight-ipython2 notranslate"><div class="highlight"><pre><span></span>J('[[[]][[][]]] void')
+<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">J</span><span class="p">(</span><span class="s1">'[[[]][[][]]] void'</span><span class="p">)</span>
</pre></div>
</div>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="kc">False</span>
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