Golang React JS Technology Blog

How to check string contains uppercase lowercase character in Golang?

Checking if any character of given string is Uppercase or Lowercase. The Unicode package's IsLower() and IsUpper() function is used to check each character of given string.

Check any character is uppercase or lowercase 
package main

import (
	"fmt"
	"unicode"
)

func main() {
	word := "Hello World"

	hasUpper := false
	hasLower := false
	for _, r := range word {
		if unicode.IsUpper(r) {
			hasUpper = true
		}
		if unicode.IsLower(r) {
			hasLower = true		
		}
	}
	fmt.Println(hasUpper)
	fmt.Println(hasLower)
}
Most Helpful This Week
How to remove all line breaks from a string in Golang? Golang String Concatenation Strip all white spaces, tabs, newlines from a string How to remove special characters from a string in GoLang? How to remove multiple spaces in a string in GoLang? How to check if a string contains certain characters in Golang?