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Editorial Team
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Asked: 2026-06-06T07:45:00+00:00

I’m working on the issue of design patterns. In this case I want to

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I’m working on the issue of design patterns. In this case I want to implement design pattern ‘Facade‘

I know that ‘Cocoa Touch‘ offers us complete solutions for applying design patterns in our projects (for example NSNotificationCenter – implements observer design pattern)

My questions is next: – do we have ability to using design pattern ‘Facade‘ as well as in the case of the observer design pattern.

Now I implement ‘Facade‘ like this:

For example i have some classes which implements some calculations. The ‘Facade‘ class combine all classes which I needed to calculations.

For example i have classes A, B, C and Facade (which contain A, B and C classes).

When I want to calculate something I just create my ‘Facade‘ and pass some argument for calculation. In this case I don’t know about classes A, B, C and this Facade object provides me one access point only.

This design pattern encapsulates objects and simplifies the application.

Is it correct implementation?

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  1. Editorial Team

    Another a good example for implementing facade pattern – pizza call service.
    For example, pizza service (subsystem) is very large and it consists of three departments (interfaces) : order department, discount department, delivery department. Each departments has own logic and interfaces.
    You can simply implement facade pattern on it.
    Here this example in more details.

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