// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package currency_test

import (
	"fmt"
	"time"

	"golang.org/x/text/currency"
)

func ExampleQuery() {
	t1799, _ := time.Parse("2006-01-02", "1799-01-01")
	for it := currency.Query(currency.Date(t1799)); it.Next(); {
		from := ""
		if t, ok := it.From(); ok {
			from = t.Format("2006-01-01")
		}
		fmt.Printf("%v is used in %v since: %v\n", it.Unit(), it.Region(), from)
	}
	// Output:
	// GBP is used in GB since: 1694-07-07
	// GIP is used in GI since: 1713-01-01
	// USD is used in US since: 1792-01-01
}