Is it safe to store a pointer to an item in an std::set?

2018-06-26 05:12:45

This question already has an answer here:

Iterator invalidation rules 4 answers

Yes, both set and unordered_set are safe in this regard. If references are not invalidated, your pointers also remain valid.

It's an easy property for the node-based collections to maintain; unlike vector there's no need for them to move values around in memory.

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