Swift Design Patterns: The Easy Way; Standard Solutions for Everyday Programming Problems; Great for: Game Programming, System Analysis, App Programming, ... & Database Systems (De by CodeWiz RDZ

Author:CodeWiz RDZ [RDZ, CodeWiz]
Language: eng
Format: epub
Publisher: UNKNOWN
Published: 2016-11-22T08:00:00+00:00

6) Create the third-level decoration subclasses. These directly extend the Decoration class you’ve developed in previous steps.

Applying the Decorator Pattern at Runtime:

1) When creating an instance of the Decorator Pattern, set its data type as the abstraction but initialize it as the default subclass:

abstractclass default = new defaultsubclass();

2) When adding a Decoration to a default subclass object, use the previous Decoration or default object as an input. If you designed the pattern correctly, all the decorations should connect to the the default class like a linked list.

DecoratorOne a = new Decorator(default)

DecoratorTwo b = new Decorator(a)

DecoratorTwo c = new Decorator(b)

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