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Delphi source code for Strings >> Check if a String is numeric

Category: Strings
Title: Check if a String is numeric
Date added: 15.03.2006
Hits: 35423

function IsStrANumber(const S: string): Boolean;
  P: PChar;
  P      := PChar(S);
  Result := False;
  while P^ <> #0 do
    if not (P^ in ['0'..'9']) then Exit;
  Result := True;

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