Mikhail Levin skrev:

Steven Watanabe writes:

...

I believe that ptr_map stores the key be value.

In Christ, Steven Watanabe

I see. Thank you.

It would be good to document this prominently, because it is natural to expect that ptr_map stores Key*, since "a set can be seen as a map, where values are irrelevant" and ptr_set<Key> stores Key*.

It should be somewhat clear from the examples, and other documentation. There are several options that you may employ: A) use shared_ptr<const Key> as key B) use std::map -Thorsten