- Group Reviewers
Note that this is still missing tests for the iterator and the sentinel, but I wanted to put it up for review to get some initial feedback. I'll finish the tests for iterator and sentinel when I get some more uninterrupted "free time".
These conditions smell backwards. Shouldn't it be _Cat satisfies derived_from<foo_tag>, i.e. derived_from<_Cat, foo_tag>?
Both the bug(?) and the sad scenario could use a test case.