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Prevent Derivation◄╣

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► KB ► To/From Guides ► C++/CLI ► Language Basics

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Prevent Derivation (Cross Ref > Language Basics)

By Mike Prestwood

C++/CLI versus Delphi Prism: A side by side comparison between C++/CLI and Delphi Prism.

OOP Details

More object oriented (OO) stuff.

Prevent Derivation

[Other Languages]

Languages Focus

How do you prevent another class from inheriting and/or prevent a class from overriding a member.

C++/CLI: sealed

Delphi Prism: sealed, final

Same keywords as Delphi (sealed uses slightly different syntax). With Prism, use the sealed keyword before the class keyword to prevent a class from being inherited from and use the final keyword to prevent a method from being overridden.

Syntax Example: 1 certification question.

type

  Robot = public sealed class(System.Object) 
  public
    method Speak(pSentence: String); virtual; final;
  end;