Benefits
• Controlled access to sole instance
• Reduced name space
• Permits refinement of operations and representation
• Permits a variable number of instances
• More flexible than class operations
Applicable Scenario
• There must be exactly one instance of a class.
博客介绍了类单例访问的好处,包括对唯一实例的受控访问、减少命名空间、允许操作和表示的细化、支持可变数量的实例,且比类操作更灵活。还指出其适用场景为类必须有且仅有一个实例。
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