Overriding Versus Hiding

If a method declaration specifies the same method identifier and parameter signature as an inherited method, but doesn't include override, the new declaration merely hides the inherited one without overriding it. Both methods exist in the descendant class, where the method name is statically bound. For example, type

T1 = class(TObject)

procedure Act; virtual; end;

procedure Act; // Act is redeclared, but not overridden end;

SomeObject: T1; begin

SomeObject := T2.Create; SomeObject.Act; // calls T1.Act end;

Project Management Made Easy

Project Management Made Easy

What you need to know about… Project Management Made Easy! Project management consists of more than just a large building project and can encompass small projects as well. No matter what the size of your project, you need to have some sort of project management. How you manage your project has everything to do with its outcome.

Get My Free Ebook


Post a comment