Conditionally returns one of two specified values.
function IfThen(AValue: Boolean; const ATrue: string; AFalse: string = ''): string; overload;
AnsiString IfThen(Boolean AValue, const AnsiString ATrue, AnsiString AFalse = '');
IfThen checks the expression passed as AValue and returns ATrue if it evaluates to true, or AFalse if it evaluates to false. In Delphi, if the AFalse parameter is omitted, IfThen returns 0 or an empty string when AValue evaluates to False.
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