Go 标准库介绍一: Replacer

Replacer 类型实现字符串替换的操作

  • func NewReplacer(oldnew ...string) *Replacer // 使用提供的多组old、new字符串对创建一个*Replacer
  • func (r *Replacer) Replace(s string) string // 返回s 所有替换完后的拷贝
  • func (r *Replacer) WriteString(w io.Writer, s string) (n int, err error)// 向w中写入s替换完后的拷贝

$GOPATH/src/github.com/ironxu/go_note/library/strings/replace.go 源码如下:

// go 标准库 strings.Replacer
package main
 
import (
    "fmt"
    "strings"
    "os"
)
 
func main() {
    s := "
 
Go Language
 
"
    r := strings.NewReplacer("<", "<", ">", ">")
    fmt.Println(r.Replace(s))
 
    r.WriteString(os.Stdout, s)
}

参考