RosettaCodeData/Task/Empty-string/Ballerina/empty-string.ballerina

import ballerina/io;

function isEmpty(string s) returns boolean {
    return s.length() == 0;
}

public function main() {
    string s = "";
    string t = "0";
    io:println("'s' is empty? ", isEmpty(s));
    io:println("'s' is not empty? ", !isEmpty(s));
    io:println("'t' is empty? ", isEmpty(t));
    io:println("'t' is not empty? ", !isEmpty(t));
}