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{{mirc title|$isnumber Identifier}}'''$isnumber''' Returns $true if text is a number, otherwise returns $false.
 
{{mirc title|$isnumber Identifier}}'''$isnumber''' Returns $true if text is a number, otherwise returns $false.
  
'''Note''': switches affects the range number parameters, see the examples
 
  
 
== Synopsis ==
 
== Synopsis ==
 
<source lang="mIRC">
 
<source lang="mIRC">
$isnumber(text,[sd],[I,J])</source>
+
$isnumber(text)</source>
  
 +
== Paramters ==
  
== Parameters ==
+
'''text''' - The input string to be checked
* '''text''' - The input string to be checked<br />
 
* '''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 ==
 
== Properties ==
 +
 
None
 
None
  
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<source lang="mIRC">//echo -a $isnumber(abcdefG)</source>
 
<source lang="mIRC">//echo -a $isnumber(abcdefG)</source>
  
will return '''$false''' because not all the characters are digits
+
will return '''$false''' because not all the character are digit
 
 
 
 
<pre>//var %a -123 | echo -a $isnumber(%a) vs $isnumber(%a,s)</pre>
 
result: $false vs $true (using a sign requires 's')
 
 
 
<pre>//echo -a $isnumber(3,d,2.1,4) vs $isnumber(3,,2.1,4)</pre>
 
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 ==
 
== Compatibility ==
 
{{mIRC compatibility|7.58}}
 
{{mIRC compatibility|7.58}}
 +
 
== See also ==
 
== See also ==
* {{mIRC|$calc}}
+
{{mIRC identifier list}}
* {{mIRC|$isnum}}
+
[[Category:mIRC identifiers|isnumber]]

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