Delphi Error – E2517 Operator ‘%s’ must take %d parameter(s)

Delphi Compiler Error

E2517 Operator ‘%s’ must take %d parameter(s)

Reason for the Error & Solution

This occurs when trying to overload an operator using an improper number of parameters.

program E2517;

{$APPTYPE CONSOLE}

uses
  SysUtils;

type
  TMyRecord = record
    class operator Implicit(a: Integer; b: Integer): TMyRecord; //E2517
end;

class operator TMyRecord.Implicit(a: Integer; b: Integer): TMyRecord;
begin
   //
end;
begin
   Writeln('E2517 Operator ''%s'' must take %d parameter(s)');
end.

See Also