STL Iterators

Do STL iterators need to be deleted when you're done with them? If I remember right, iterators are nothing but pointers that have been gussied up, but do they have their own destructors that clean up all their internal mess? I can't remember for the life of me and google is no help.

>>18
>sizeof(container)/sizeof(container[0]) on a pointer
Nothing wrong with that, sizeof doesn't actually access its argument.