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