Overview

In GO string are UTF-8 encoded. strings package of GO provides a Replace method that can be used to replace a character with another in a given string. It returns a copy of the string.

Below is the signature of the function.

• Supplies the character that is to be replaced as old

• Supply the character you want to be replaced with as new

• n represents the number of replacements. If n is -1 then all instances of old are replaced with new

func Replace(s, old, new string, n int)

Let’s look at the working code

Code:

package main

import (
    "fmt"
    "strings"
)

func main() {
    //It will replaces 1 instance of a with 1
    res := strings.Replace("abcdabxyabr", "a", "1", 1)
    fmt.Println(res)

    //It will replace all instances of a with 1
    res = strings.Replace("abcdabxyabr", "a", "1", -1)
    fmt.Println(res)
}

Output:

1bcdabxyabr
1bcd1bxy1br