Why is the C++ STL set container's count() method thus named?

Question

What it really checks for is contains() and not the count of the number of occurrences, right? Duplicates are not permitted either so wouldn\'t contains() be a better name t

Answer 1

It's a standard operation on containers that returns the number of matching elements. In things like lists, this makes perfect sense. It just so happens that on a set, there can only be one occurrence of an element and therefore count can never return a value greater than 1.