package main import s "strings" //strings取个别名 import "fmt" //我们给 fmt.Println 一个短名字的别名,我们随后将会经常用到。 var p = fmt.Println func main() { //这是一些 strings 中的函数例子。注意他们都是包中的函数,不是字符串对象自身的方法,这意味着我们需要考虑在调用时传递字符作为第一个参数进行传递。 p("Contains: ", s.Contains("test", "es")) p("Count: ", s.Count("test", "t")) p("HasPrefix: ", s.HasPrefix("test", "te")) p("HasSuffix: ", s.HasSuffix("test", "st")) p("Index: ", s.Index("test", "e")) p("Join: ", s.Join([]string{"a", "b"}, "-")) p("Repeat: ", s.Repeat("a", 5)) p("Replace: ", s.Replace("foo", "o", "0", -1)) p("Replace: ", s.Replace("foo", "o", "0", 1)) p("Split: ", s.Split("a-b-c-d-e", "-")) p("ToLower: ", s.ToLower("TEST")) p("ToUpper: ", s.ToUpper("test")) p() p("Len: ", len("hello")) p("Char:", "hello"[1]) } $ go run string-functions.go Contains: true Count: 2 HasPrefix: true HasSuffix: true Index: 1 Join: a-b Repeat: aaaaa Replace: f00 Replace: f0o Split: [a b c d e] toLower: test ToUpper: TEST Len: 5 Char: 101