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   ► KBTo/From GuidesDelphi Prism  Print This     

Prevent Derivation (Delphi Prism and PHP Cross Reference Guide)

By Mike Prestwood

Delphi Prism versus PHP: A side by side comparison between Delphi Prism and PHP.

OOP Details

More object oriented (OO) stuff.

Prevent Derivation

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

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:  
  Robot = public sealed class(System.Object) 
method Speak(pSentence: String); virtual; final;
[Not specified yet. Coming...]

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