Sidenote: while writing this, I've noticed find_if doesn't seem tested?
Embarrassingly, it's true, we don't have specific tests for find_if and find_if_not (although they're used in the implementation of filter and various other places, so we know they work...)
From #193 by @Guekka:
Embarrassingly, it's true, we don't have specific tests for
find_ifandfind_if_not(although they're used in the implementation offilterand various other places, so we know they work...)The lack of tests should be fixed.