$isdigit
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$isdigit
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Tests if a character string contains only digits.
Syntax
$isdigit(string)Parameters
| string | a character string or an expression that evaluates to a character string |
Return Value
1-character binary string. Evaluates to 1 ($True) if string meets the validation test; otherwise, evaluates to 0 ($False).
Comments
This function tests if a particular character string is all digits.
Example
$isdigit("0123")Evaluates to $True.
$isdigit(2.3)
Evaluates to $False.
See Also
Updated
ByJason Lee
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