Types of references

Find right pairs

Report a typo

Мatch the reference types with their purpose for objects. Note that in each case we assume that only one given type is present.

Match the items from left and right columns

Strong

Soft

Weak

Phantom

Does not allow deleting an object as long as it has a reference.

The object will be removed during the next garbage collection.

The object will be removed only when memory runs out.

Allows to determine the time of object deletion.

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