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Returns the result type of front
.
template<typename Seq> struct front { typedef unspecified type; };
Table 1.22. Parameters
Parameter | Requirement | Description |
---|---|---|
Seq |
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>
typedefvector
<int,char> vec; BOOST_MPL_ASSERT((boost::is_same<result_of::front
<vec>::type, int&>));
Copyright © 2001-2005 Joel de Guzman, Dan Marsden |