Python Programming with Design Patterns by James W. Cooper

Author:James W. Cooper [James W. Cooper]
Language: eng
Format: epub
Publisher: Addison-Wesley Professional
Published: 2021-12-16T16:00:00+00:00

When to Use the Chain

The Chain of Responsibility pattern is a good example of a pattern that helps keep knowledge separate from what each object in a program can do. In other words, it reduces the coupling between objects so that they can act independently. This also applies to the object that constitutes the main program and contains instances of the other objects. You will find this pattern helpful in certain cases:

Several objects have similar methods that could be appropriate for the action the program is requesting. However, it is more appropriate for the objects to decide which one is to carry out the action than it is for you to build this decision into the calling code.

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