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The template method is used in frameworks, where each implements the invariant parts of a domain's architecture, while providing hook methods for customization. This is an example of inversion of control. The template method is used for the following reasons. [3] It lets subclasses implement varying behavior (through overriding of the hook ...
Hook methods are of particular importance in the template method pattern where common code in an abstract class can be augmented by custom code in a subclass. In this case each hook method is defined in the abstract class with an empty implementation which then allows a different implementation to be supplied in each concrete subclass.
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For a check which fails, leave the relevant entry in the template blank (and leave a comment below the template explaining the problem). The fields refer to the following checks: |format= refers to whether the hook conforms to WP:DYK#Format.
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