The cancer-color proliferation also has created some quirky chromatic overlaps. Orange represents two cancers (kidney, leukemia). Green stands for three (liver, lymphoma gall bladder). Variations of purple signify six (pancreatic, testicular, leiomyosarcoma, Hodgkin lymphoma, stomach and esophageal).
If the container is empty, then begin() == end(); All standard iterator and container types behave the same in this regard: Â§23.2.1 [container.requirements.general] p6. begin() returns an iterator referring to the first element in the container.
1 Check whether the stack is empty; if so, throw an EmptyStackException. 2  Remove the first node from the list by setting items = items.next. 3  Decrement numItems.  Return the value that was in the first node in the list.