GO: 字符串

分割/截取/拼接字符串

 strs := strings.Split("this is a string", " ")

str1 := "this is a string"
strs := str1[0:5]

strs = strings.Join(strs,"_")

替换字符串

str := strings.Replace("this is a string", " ", "_", -1)

-1表示所有的空格都替换为下划线，如果是正数(n)，就表示有n个空格替换为下划线

大小写转化

每个单词首字母大写

str := strings.toTitle("this is a string"）

全部转大写

str := strings.toUpper("this is a string")

全部转小写

str := strings.toLower("THIS IS A STRING")

判断前后缀

fmt.Println(strings.HasPrefix("Gopher", "Go")) // true
fmt.Println(strings.HasPrefix("Gopher", "C")) // false 
fmt.Println(strings.HasPrefix("Gopher", "")) // true 

fmt.Println(strings.HasSuffix("Amigo", "go")) // true 
fmt.Println(strings.HasSuffix("Amigo", "O")) // false
fmt.Println(strings.HasSuffix("Amigo", "Ami")) // false
fmt.Println(strings.HasSuffix("Amigo", "")) // true