For how long the iterator returned by std::set.find() lives?

Question

I need to keep track of std::set element by saving the iterator returned by set.find().

My questions is does insertion and removing other elements invalidates the obtained iterator? From a simple test I did I can see it is not, but I'd like to ensure this feature is by design.

Answer 1

It never invalidates iterators or pointers/references to the elements. Only if you remove the element itself does the iterator or pointer/reference become invalid.

23.1.2/8:

The insert members shall not affect the validity of iterators and references to the container, and the erase members shall invalidate only iterators and references to the erased elements.