Join Jungwoo Ryoo for an in-depth discussion in this video Singleton, part of Design Patterns with Python.
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- An object-oriented way…of providing global variables is Singleton.…Singleton is the pattern you need…when you'd like to allow only one object…to be instantiated from a class.…Like I said, creating a global variable…in an object-oriented way is Singleton.…Why would you need such a pattern?…Let's say that there is a need…for keeping a cache of information to be shared…by various elements of your software system.…By keeping this information in the single object,…there's no need to retrieve the information…from its original source every time.…
So in this case, Singleton acts as…a cache of the information.…Modules in Python act as Singletons.…There are also a number of ways…of implementing Singleton,…but we'll be using the Borg design pattern…to implement our Singleton.…
- Understanding design patterns
- Best design practices: consistency, completeness, and correctness
- Working with creational patterns
- Working with structural patterns
- Working with behavioral patterns
Skill Level Intermediate
Foundations of Programming: Design Patternswith Elisabeth Robson2h 19m Intermediate
1. Understanding Design Patterns
2. Creational Patterns
3. Structural Patterns
4. Behavioral Patterns
5. Design Best Practices
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