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$isnum Identifier - mIRC
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$isnum Returns $true if text is a number, otherwise returns $false.
Note: switches affects the range number parameters, see the examples
Synopsis
$isnum(text,[sd],[I,J])
Parameters
- text - The input string to be checked
- s - also permits +- sign to be used
- d - also permits the decimal, allowing numbers with fractions
- [I,J] - If you pass a third and fourth parameters, they must be valid number (with respect to the switches used) and are used to validate the number in a range.
Properties
None
Example
//echo -a $isnum(564)
will return $true
//echo -a $isnum(abcdefG)
will return $false because not all the characters are digits
//var %a -123 | echo -a $isnum(%a) vs $isnum(%a,s)
result: $false vs $true (using a sign requires 's')
//echo -a $isnum(3,d,2.1,4) vs $isnum(3,,2.1,4)
result: $false vs error, the d switches is required not only to allow decimal in the input, but in each range parameter as well
Compatibility
Added: mIRC v7.58
Added on: 17 Nov 2019
Note: Unless otherwise stated, this was the date of original functionality.
Further enhancements may have been made in later versions.