如何在golang中修剪字符串的前后空格？

例如，

package main 

import (
    "fmt" 
    "strings" 
) 

func main() { 
    s := "\t Hello, World\n " 
    fmt.Printf("%d %q\n", len(s), s) 
    t := strings.TrimSpace(s) 
    fmt.Printf("%d %q\n", len(t), t) 
} 

输出：

16 "\t Hello, World\n " 
12 "Hello, World"