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What is the singleton design pattern In the whole system, there is only one instance object of a class that can be obtained and used main points A class can only have one instance object Constructor privatization You must create this instance yourself Contains a static variable of this class to store this instance Provide this instance to ...

introduction The previous article mentioned that the "multi-threaded version of if" can be used to understand the Guarded Suspension mode, which is different from the if in a single thread. This "multi-threaded version of if" needs to wait and is very persistent. You must wait until the condition is true. But obviously, ...

Singleton mode from simple to deep (C# version) Sometimes, we want a class to have only one instance. The benefits are: 1. Data sharing can be realized 2. Avoid creating and destroying a large number of instances to improve performance In order to implement the singleton mode, the usual methods are: 1. Privatize the constructor to avoid exter ...

Singleton mode definition Singleton design pattern generally refers to the singleton design pattern of a class, which is to take certain methods to ensure that there can only be one object instance for a class in the whole software system, and the class only provides a method to obtain its object instance (static method). example For exampl ...

catalogue Singleton mode definition: Core principle of singleton mode: What should be paid attention to when using singleton mode Single case of hungry man Lazy single case DCL single case (Double Check Lock) Static internal class singleton (recommended) Enumeration singleton Container single example last How to ensure thread safet ...