E2519 First parameter type of operator '%s' and result type must be identical (Delphi)
Go Up to Error and Warning Messages (Delphi)
This occurs when the type of the parameter for the overloaded operator differs from the return type of the operator.
program E2519;
{$APPTYPE CONSOLE}
uses
SysUtils;
type
TMyRecord = record
class operator Inc(a: TMyRecord): Boolean; //E2519
end;
class operator TMyRecord.Inc(a: TMyRecord): Boolean;
begin
// code
end;
begin
Writeln('E2519 First parameter type of operator ''%s'' and result type must be identical');
end.