What are some common template patterns in different programming languages?

What are some common template patterns in different programming languages?

Common template patterns include Factory, Singleton, and Strategy patterns, which can be implemented in languages like C++, Java, and Python.

Can you explain the Factory pattern with an example?

Sure! The Factory pattern creates objects without specifying the exact class. For example, in Python, you might have a ShapeFactory that creates different shapes based on input.

How does the Singleton pattern work?

The Singleton pattern ensures a class has only one instance and provides a global point of access. In Java, you can achieve this by making the constructor private and using a static method to get the instance.

What about the Strategy pattern?

The Strategy pattern defines a family of algorithms, encapsulates each one, and makes them interchangeable. For instance, in C#, you can have different sorting strategies that can be selected at runtime.