~~Title: IsDigit~~ IsDigit && bool && **True** if //string// consists only of digits. && string && string && String to test. Returns **True** if //string// consists entirely of digit characters, otherwise returns **False**. //Example:// Output(IsDigit("12345")) --> true Output(IsDigit("123a5")) --> false //See also://\\ [[isalpha]]\\ [[islower]]\\ [[ispunct]]\\ [[isspace]]\\ [[isupper]]\\