Reusing the Same Object Instance
Explore how to maintain a single instance of an object across an entire application using the Singleton design pattern. Discover why this pattern helps avoid bugs related to multiple instances and how it applies to scenarios like managing shared resources and implementing object pools, improving code maintainability and scalability.
Problem statement
Let’s imagine that we have a requirement to use exactly the same object instance throughout our entire application, regardless of whether the classes that use it can communicate directly with each other or not.
One thing we can do is instantiate it in one place and then pass the instance to every single class. This will work, but it’s less than desirable. It means that we’ll have to write a lot of extra code that’ll be hard to read and maintain.
Plus, there’s nothing that would stop passing a different object reference into a class that uses ...