Numerous design patterns let you extend functionality; for example, in Java Design Patterns you’ve seen how to extend functionality with the Proxy, Decorator, and Strategy patterns.

Implementing Strategy Pattern and Callbacks in TypeScript. The TypeScript datatyping support not only applies to simple variables, it also supports you when doing clever things with functions.

Implementing the Strategy Pattern The strategy pattern allows developers to control the processing performed by a function by providing another function that's used inside the function being called ...