String functions

Context

The strings package provides many utility functions for string manipulation.

Common functions: Contains, Count, HasPrefix, HasSuffix, Index, Join, Repeat, Replace, Split, ToLower, ToUpper, TrimSpace.

Example

Use several string functions.

Code example

package main

import (
    "fmt"
    "strings"
)

func main() {
    s := "  Hello, Go!  "
    fmt.Println("Trimmed:", strings.TrimSpace(s))
    fmt.Println("Upper:", strings.ToUpper(s))
    fmt.Println("Contains 'Go':", strings.Contains(s, "Go"))
    fmt.Println("Split by space:", strings.Split(s, " "))
    fmt.Println("Replace Go with Gophers:", strings.ReplaceAll(s, "Go", "Gophers"))
    fmt.Println("Join:", strings.Join([]string{"a", "b", "c"}, "-"))
}

Output

Trimmed: Hello, Go!
Upper:   HELLO, GO!
Contains 'Go': true
Split by space: [  Hello,  Go!  ]
Replace Go with Gophers:   Hello, Gophers!
Join: a-b-c

Useful links

• strings package documentation
• Go by Example: String Functions