Design Pattern 5. Singleton Pattern
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The document discusses the singleton pattern, which ensures that only one instance of a class is created. It is a design pattern that restricts the instantiation of a class to one object. This is useful when exactly one object is needed to coordinate actions across the system. The singleton class contains a private constructor and a public static method that allows access to the sole instance.
Design Pattern 5. Singleton Pattern
- 1. Singleton Pattern Company Name
- 2. Singleton Pattern Problem : We want a pattern that it istantate a single copy of the object
- 3. Only a copy of the object Solution Singleton pattern : Construttore privato
- 5. Method instanzia oggetto se è null
- 6. Singleton Pattern Code
- 7. Singleton Pattern Code