Golang : Test input string for unicode example

Problem:

You are trying to create a slightly different solution for user that use unicode and you want to test if an input string has unicode characters within? How to do that?

Solution:

Measure the input string twice. Once with len() function and another with utf8.RuneCountInString() function. If both length is the same, then there is no unicode detected within the input string.

Here you go!

 package main

 import (
 "bufio"
 "fmt"
 "os"
 "strings"
 "unicode/utf8"
 )

 // test to see if the input string has unicode
 func testStringForUnicode(s string) bool {
 a := len(s)
 b := utf8.RuneCountInString(s)

 if a == b {
 return false
 } else {
 return true
 }
 }

 func main() {

 fmt.Println("Enter a word, phrase or number : ")

 consoleReader := bufio.NewReader(os.Stdin)
 answer, _ := consoleReader.ReadString('\n')

 // get rid of the extra newline character from ReadString() function
 answer = strings.TrimSuffix(answer, "\n")

 fmt.Println(answer, " have unicode characters ? ", testStringForUnicode(answer))

 }

Sample output:

Enter a string with or without unicode :

fuß is german language for foot

fuß is german language for foot have unicode characters ? true

Enter a string with or without unicode :

foot is english language for foot

foot is english language for foot have unicode characters ? false