Result = IsDigit ( Arg AS String ) AS Boolean Result = Digit? ( Arg AS String ) AS Boolean
Returns TRUE if the String Arg contains only digits.
A digit is one of the following characters: 0 1 2 3 4 5 6 7 8 9
0 1 2 3 4 5 6 7 8 9
PRINT IsDigit("1972")
True
PRINT IsDigit("three")
False
Character Test Functions