如何修剪一个字符串的领先和拖尾空白？

Which is the effective way to trim the leading and trailing white spaces of string variable in Go?

For example,

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)
}

Output:

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

There's a bunch of functions to trim strings in go.

See them there : Trim

Here's an example, adapted from the documentation, removing leading and trailing white spaces :

fmt.Printf("[%q]", strings.Trim(" Achtung  ", " "))

For trimming your string, Go's "strings" package have TrimSpace(), Trim() function that trims leading and trailing spaces.

Check the documentation for more information.

Just as @Kabeer has mentioned, you can use TrimSpace and here is an example from golang documentation:

package main

import (
    "fmt"
    "strings"
)

func main() {
    fmt.Println(strings.TrimSpace(" \t\n Hello, Gophers \n\t\r\n"))
}

package main

import (
    "fmt"
    "strings"
)

func main() {
    fmt.Println(strings.TrimSpace(" \t\n Hello, Gophers \n\t\r\n"))
}

Output: Hello, Gophers

And simply follow this link - https://golang.org/pkg/strings/#TrimSpace