Web Reference: Oct 1, 2008 · When you include a module into a class, the module methods are imported as instance methods. However, when you extend a module into a class, the module methods are imported as class methods. Jan 10, 2023 · In simple words, the difference between include and extend is that 'include' is for adding methods only to an instance of a class and 'extend' is for adding methods to the class but not to its instance. Aug 5, 2024 · In Ruby, both include and extend are used to incorporate modules into classes, but they serve different purposes and are used in different contexts. Understanding the difference between these two methods is crucial for effectively organizing and utilizing code in Ruby applications.
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