...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Returns the result type of front
.
template<typename Seq> struct front { typedef unspecified type; };
Table 1.26. Parameters
Parameter |
Requirement |
Description |
---|---|---|
|
A model of Forward Sequence |
Argument sequence |
result_of::front<Seq>::type
Return type: Any type
Semantics: The type returned by dereferencing
an iterator to the first element in Seq
.
Equivalent to
.
result_of::deref
<result_of::begin
<Seq>::type>::type
#include <boost/fusion/sequence/intrinsic/front.hpp> #include <boost/fusion/include/front.hpp>
typedefvector
<int,char> vec; BOOST_MPL_ASSERT((boost::is_same<result_of::front
<vec>::type, int&>));