Delphi Compiler Error
E2521 Operator ‘%s’ must take one ‘%s’ type in parameter or result type
Reason for the Error & Solution
This occurs when using a type that is redundant for the operator overload when applied to a type (it applies to Explicit and Implicit overloads.)
program E2521;
{$APPTYPE CONSOLE}
uses
SysUtils;
type
TMyRecord = record
class operator Implicit(a: TMyRecord): TMyRecord; //E2521
end;
class operator TMyRecord.Implicit(a: TMyRecord): TMyRecord;
begin
// code
end;
begin
Writeln('E2521 Operator ''%s'' must take one ''%s'' type in parameter or result type');
end.
