Object copying - Wikipedia

In object-oriented programming, object copying is the act of creating and initializing a new object based on an existing object's state. The various ways to implement copy have implications that a programmer needs to understand in order to write a computer program that is correct and performant. Copying allows for the emergent state of the original object – represented by its internal state – to b

[nabinno]

shallow copy, deep copy, lazy copy

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shallow copyとdeep copy。lazyって何。