long findFirst(E e);
long findLast(E e);
Arguably better as findXxx(Predicate)
I agree about adding predicate versions.
But people will complain about requiring a lambda in plain version
that otherwise ought to be simple enough to compile into
optimal machine instruction loop for ArrayLists
The usual (bad) argument against overloading findXxx(E) and
findXxx(Predicate<E>) is that null is accepted by both signatures. But
I have no problem with both, and both have reasonable defaults so can be
freely added.
