Topic Path: Symbol Reference > Functions > IsNumeric Function (string)
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IsNumeric Function

Determines if the characters are valid numeric digits.

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

Boolean - True when the characters are valid numeric digits.

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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