Benefits
It lets you add or remove objects at runtime.
It lets you specify new objects by varying its values or structure.
It reduces the need for subclassing.
It lets you dynamically configure an application with classes.
Applicable Scenarios
The classes to instantiate are specified at runtime.
You need to avoid building a class hierarchy of factories that parallels the hierarchy of objects.
Instances of the class have one of only a few different combinations of state.
博客介绍了原型模式的优势,包括可在运行时添加或移除对象、通过改变值或结构指定新对象、减少子类化需求、用类动态配置应用等。还提及了适用场景,如运行时指定要实例化的类、避免构建与对象层次平行的工厂类层次、类实例状态组合较少等。
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