Overview

In GO string are UTF-8 encoded. strings package of GO provides a Fields method that can be used to split a string around an instance of one or more consecutive white space character.

Below is the signature of the function

func Fields(s string) []string 

As you can notice it returns a slice of substrings of the input string. Also, note that if the input string is empty it will return an empty slice if

• The input string is empty

• Input string contains only whitespaces

Code:

package main
import (
"fmt"
"strings"
)
func main() {
//Case 1 Input string contains single spaces
res := strings.Fields("ab cd ef")
fmt.Println(res)
//Case 2 Input string doesn't contain white spaces
res = strings.Fields("abcdef")
fmt.Println(res)
//Case 3 Input string contains double white spaces and spaces at end too.
res = strings.Fields("ab cd ef ")
fmt.Println(res)
//Case 4: Input string contain white spaces only. Will output a empty slice
res = strings.Fields(" ")
fmt.Println(res)
//Case 5: Input string is empty. Will output a empty slice
res = strings.Fields("")
fmt.Println(res)
}

Output:

[ab cd ef]
[abcdef]
[ab cd ef]
[]
[]