Boost C++ Libraries

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begin
Description

Returns the result type of begin.

Synopsis
template<typename Seq>
struct begin
{
    typedef unspecified type;
};

Table 1.23. Parameters

Parameter

Requirement

Description

Seq

A model of Forward Sequence

Argument sequence


Expression Semantics
result_of::begin<Seq>::type

Return type:

Semantics: Returns the type of an iterator to the first element of Seq.

Header
#include <boost/fusion/sequence/intrinsic/begin.hpp>
#include <boost/fusion/include/begin.hpp>
Example
typedef vector<int> vec;
typedef result_of::begin<vec>::type it;
BOOST_MPL_ASSERT((boost::is_same<result_of::deref<it>::type, int&>))

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