<deque>
The <deque> header is one of the standard container template headers.
It declares the deque class template
and a few global functions that operate on deque objects.
A deque, short for double-ended queue, is similar to a vector, but the performance is constant when adding to or removing from the collection at the beginning and at the end.
If you need a vector of bool
that behaves as a normal C++ container, you should use deque<bool> instead of vector<bool>. See <vector> later in this chapter for an
explanation.
See Chapter 10 for information about containers in general.
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