Topic Path: Symbol Reference > Functions > IsNumeric Function (string)
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IsNumeric Function
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Determines if the characters are valid numeric digits.

File

IdGlobal

Pascal
function IsNumeric(
    const AString: string
): Boolean; overload;
Parameters
Parameters 
Description 
AString 
Characters to examine for valid numeric digits. 
Returns

Boolean - True when the characters are valid numeric digits.

Description

IsNumeric is an overloaded Boolean function used to determine if the characters in AString are valid numeric digits. IsNumeric returns True when AString contains characters including: 

 

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See Also
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