Software Design/Minimize the accessibility of classes and members

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Checklist questions:

  • Can the class be private to the package (enclosing class)?
  • Can the function be private to the class (class and its subclasses, package)?
  • Can the field (constant) be private to the class (package)?

This practice corresponds to rule Minimize exposure of members from C++ Core Guidelines.

Minimizing the accessibility of classes, functions, and fields is the primary way of increasing encapsulation of a component, that helps to keep the components loosely coupled and the connascence low. This, in turn, makes understanding, change, testing, and debugging of individual components easier.[1]


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  1. Effective Java (3 ed.). 2018. ISBN 978-0134685991.  Item 15: "Minimize the accessibility of classes and members"