IsAscii | Tests if a string contains only ASCII characters. |
IsBlank | Tests if a string contains only blank characters. |
IsDigit | Tests if a string contains only digits. |
IsHexa | Tests if a string contains only hexadecimal digits. |
IsLCase | Tests if a string contains only lowercase letters. |
IsLetter | Tests if a string contains only letters. |
IsPunct | Tests if a string contains only printable non-alphanumeric characters. |
IsSpace | Tests if a string contains only space characters. |
IsUCase | Tests if a string contains only uppercase letters. |