Class Helper in Delphi. Is it useful or not ?
Class Helper Class Helper is a Type that associated with another Class, generally used to extend a class without using inheritance. We can introduce new functionalities with additional methods and properties which can be used with members of associated class. To declare a Class Helper we have to state a Helper name with associated Class name. The syntax for declaring a class helper is: type TMyClassHelper = class helper for TMyClass memberList end; Example... // my Class // type TMyClass = class procedure MyProc; function MyFunc: Integer; end; ... procedure TMyClass.MyProc; var X: Integer; begin X := MyFunc; end; function TMyClass.MyFunc: Integer; begin ... end; ... // Class Helper for TMyClass // type TMyClassHelper = class helper for TMyClass procedure HelloWorld; function MyFunc: Integer; end; ... procedure TMyClassHelper.HelloWo