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[util][range] Use range_reference

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Use range_reference to determine the return type of boost::at,
boost::front and boost::back.
This commit is contained in:
Samuel Debionne
2015-03-06 18:12:56 +01:00
parent 2e18afacce
commit d7aae45daf
1 changed files with 7 additions and 7 deletions
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14
include/boost/geometry/util/range.hpp
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@@ -81,7 +81,7 @@ pos(RandomAccessRange & rng,
\ingroup utility
*/
template <typename RandomAccessRange>
inline typename boost::range_value<RandomAccessRange const>::type const&
inline typename boost::range_reference<RandomAccessRange const>::type
at(RandomAccessRange const& rng,
typename boost::range_size<RandomAccessRange const>::type i)
{
@@ -94,7 +94,7 @@ at(RandomAccessRange const& rng,
\ingroup utility
*/
template <typename RandomAccessRange>
inline typename boost::range_value<RandomAccessRange>::type &
inline typename boost::range_reference<RandomAccessRange>::type
at(RandomAccessRange & rng,
typename boost::range_size<RandomAccessRange>::type i)
{
@@ -107,7 +107,7 @@ at(RandomAccessRange & rng,
\ingroup utility
*/
template <typename Range>
inline typename boost::range_value<Range>::type const&
inline typename boost::range_reference<Range const>::type
front(Range const& rng)
{
BOOST_ASSERT(!boost::empty(rng));
@@ -119,7 +119,7 @@ front(Range const& rng)
\ingroup utility
*/
template <typename Range>
inline typename boost::range_value<Range>::type &
inline typename boost::range_reference<Range>::type
front(Range & rng)
{
BOOST_ASSERT(!boost::empty(rng));
@@ -133,7 +133,7 @@ front(Range & rng)
\ingroup utility
*/
template <typename BidirectionalRange>
inline typename boost::range_value<BidirectionalRange>::type const&
inline typename boost::range_reference<BidirectionalRange const>::type
back(BidirectionalRange const& rng)
{
BOOST_RANGE_CONCEPT_ASSERT(( boost::BidirectionalRangeConcept<BidirectionalRange const> ));
@@ -146,10 +146,10 @@ back(BidirectionalRange const& rng)
\ingroup utility
*/
template <typename BidirectionalRange>
inline typename boost::range_value<BidirectionalRange>::type &
inline typename boost::range_reference<BidirectionalRange>::type
back(BidirectionalRange & rng)
{
BOOST_RANGE_CONCEPT_ASSERT(( boost::BidirectionalRangeConcept<BidirectionalRange> ));
BOOST_RANGE_CONCEPT_ASSERT((boost::BidirectionalRangeConcept<BidirectionalRange>));
BOOST_ASSERT(!boost::empty(rng));
return *(boost::rbegin(rng));
}