Returns false if there is no such element. Removes all elements t in self that compare equal to a . Returns the number of items removed. Returns the number of items removed. Changes the capacity of self by creating a new hashed multi-set with a capacity of sz .
Self is replaced by the result.
Self is replaced by the result. Saves the collection coll onto the output stream strm , or a reference to it if it has already been saved. If a collection is created off the heap, then you are responsible for deleting it.