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begin
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Returns an iterator pointing to the first element in the sequence.

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

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

Requirement

Description

seq

Model of Forward Sequence

The sequence we wish to get an iterator from.

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begin(seq);

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Semantics: Returns an iterator pointing to the first element in the sequence.

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#include <boost/fusion/sequence/intrinsic/begin.hpp>
#include <boost/fusion/include/begin.hpp>
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vector<int, int, int> v(1, 2, 3);
assert(deref(begin(v)) == 1);

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