Can you explain the difference between Map and WeakMap in JavaScript?
Sure! Both Map and WeakMap are collections for storing key-value pairs, but they have some key differences.
What are the main differences in terms of memory management?
Map holds strong references to its keys, while WeakMap holds weak references, allowing for garbage collection of keys that are no longer in use.
Can you give an example of when to use WeakMap?
Absolutely! Use WeakMap when you want to associate data with an object without preventing that object from being garbage collected.
Are there any performance differences between the two?
Yes, WeakMap can be more memory efficient since it allows for garbage collection of unused keys, while Map retains all keys.
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