From: Robin Eklind <r.eklind.87@gmail.com>
Date: Mon, 16 Dec 2013 18:44:23 +0000 (-0800)
Subject: strings: Add IndexFunc example
X-Git-Tag: go1.3beta1~1222
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=ab9b2ae38cced9938bb5d8dfdc671fcd2be9b204;p=gostls13.git

strings: Add IndexFunc example

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/42370043
---

diff --git a/src/pkg/strings/example_test.go b/src/pkg/strings/example_test.go
index 7350131b85..62a9af74d0 100644
--- a/src/pkg/strings/example_test.go
+++ b/src/pkg/strings/example_test.go
@@ -68,6 +68,17 @@ func ExampleIndex() {
 	// -1
 }
 
+func ExampleIndexFunc() {
+	f := func(c rune) bool {
+		return unicode.Is(unicode.Han, c)
+	}
+	fmt.Println(strings.IndexFunc("Hello, 世界", f))
+	fmt.Println(strings.IndexFunc("Hello, world", f))
+	// Output:
+	// 7
+	// -1
+}
+
 func ExampleIndexRune() {
 	fmt.Println(strings.IndexRune("chicken", 'k'))
 	fmt.Println(strings.IndexRune("chicken", 'd'))