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I don't know which one it is. I've never used the STL before, and I'm just getting started, and finding that using it doesn't appear to be horribly difficult. I just need clarification on one thing... which one of the libraries is like a linked list, but only adds a new element if it doesn't exist anywhere else in the list? Like, if I tried to added "1,2,3,4,5,6" to the list, and then tried to add 5 again, it wouldn't do anything. Hmmm... I think there is one. Am I wrong?
std::set in <set>
haha, I decided that instead of reading, I would program my own for this... it didn't take as long as I thought it would... lol. I'm a loser.
There's only one STL. What you're looking for is an STL container.
std::list also has a function, unique() which removes adjacent identical elements.
Also note, <algorithm> defines a generic std::unique algorithm which does the same.
Just remember the key thing with the unique function is that the elements in the container are required to be sorted prior to its use.