back

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Returns the last element in the sequence.

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template <typename Sequence>
typename result_of::back<Sequence>::type
back(Sequence& seq);

template <typename Sequence>
typename result_of::back<Sequence const>::type
back(Sequence const& seq);

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Parameter	Requirement	Description
`seq`	Model of Bidirectional Sequence	The sequence we wish to investigate.

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back(seq);

Return type: Returns a reference to the last element in the sequence seq if seq is mutable and e = o, where e is the last element in the sequence, is a valid expression. Else, returns a type convertable to the last element in the sequence.

Precondition: empty(seq) == false

Semantics: Returns the last element in the sequence.

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#include <boost/fusion/sequence/intrinsic/back.hpp>
#include <boost/fusion/include/back.hpp>

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vector<int, int, int> v(1, 2, 3);
assert(back(v) == 3);