Core Concepts
The singleton design pattern restricts the instantiation of a class to one object, providing a global point of access to it.
Abstract
The content discusses the implementation of the singleton design pattern in Python, which is a common interview question for backend software engineering roles.
The singleton pattern is a software design pattern that restricts the instantiation of a class to one object, providing a global point of access to it. This is useful when you want to ensure that there is only one instance of a particular class in your application, and you want to provide a global point of access to that instance.
The author explains that the singleton pattern is often asked as an interview question for backend software engineer positions. They then proceed to provide a step-by-step guide on how to implement the singleton pattern in Python.
The key steps involved are:
Define a private class attribute to hold the single instance of the class.
Define a private constructor to prevent direct instantiation of the class.
Define a public class method to provide a global point of access to the single instance.
The author also mentions that there are various ways to implement the singleton pattern in Python, and the specific implementation may vary depending on the requirements of the application.
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