Overview

In GO string are UTF-8 encoded. strings package of GO provides a Count method that can be used to get the number of non-overlapping instances of a substring in a particular string.
Below is the signature of the function

func Count(s, substr string) int

Also note that if the substr supplied to the function is an empty string, then return value will be 1+ count of Unicode Code points in the given string.

Let’s look at the working code

Code:

package main

import (
    "fmt"
    "strings"
)

func main() {

    //Case 1 Input string contains the substring
    res := strings.Count("abcdabcd", "ab")
    fmt.Println(res)

    //Case 1 Input string doesn't contains the substring
    res = strings.Count("abcdabcd", "xy")
    fmt.Println(res)

    //Case 1 Substring supplied is an empty string
    res = strings.Count("abcdabcd", "")
    fmt.Println(res)
}

Output:

2
0
9