btree map into_iter

[barkanido]

Hey and thanks for this great repo!

I am looking for some directions on how to implement IntoIterator for TicketStore.

from the test it looks like the returned iterator is expected to yield on a Ticket but the 'natural' iterator supplied by BTreeMap yields both the key and the value as documented here.

This confuses me:

1. what would be the associated types of the returned iterator?
2. can this be done without collecting (memory allocation) into a Vec first, for example, using a .map(|_, t| t). in that case, what should be the associated IntoIter type?

[LukeMathWalker]

It can—you have different methods on BTreeMap returning different kinds of iterators.
Look at the solution branch if you're still in doubt!