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Gather does not (in general) work with forward iterators, even though it does on some systems

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[SVN r83158]
This commit is contained in:
Marshall Clow
2013-02-25 22:31:52 +00:00
parent 5f45246c6c
commit ef16153353
3 changed files with 18 additions and 19 deletions
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17
include/boost/algorithm/gather.hpp
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@ -80,9 +80,10 @@ namespace boost { namespace algorithm {
*/
template <
typename ForwardIterator, // Iter models ForwardIterator
typename Pred> // Pred models UnaryPredicate
std::pair<ForwardIterator,ForwardIterator> gather ( ForwardIterator first, ForwardIterator last, ForwardIterator pivot, Pred pred )
typename BidirectionalIterator, // Iter models BidirectionalIterator
typename Pred> // Pred models UnaryPredicate
std::pair<BidirectionalIterator, BidirectionalIterator> gather
( BidirectionalIterator first, BidirectionalIterator last, BidirectionalIterator pivot, Pred pred )
{
// The first call partitions everything up to (but not including) the pivot element,
// while the second call partitions the rest of the sequence.
@ -99,14 +100,14 @@ std::pair<ForwardIterator,ForwardIterator> gather ( ForwardIterator first, Forwa
*/
template <
typename ForwardRange, //
typename BidirectionalRange, //
typename Pred> // Pred models UnaryPredicate
std::pair<
typename boost::range_iterator<ForwardRange>::type,
typename boost::range_iterator<ForwardRange>::type>
typename boost::range_iterator<const BidirectionalRange>::type,
typename boost::range_iterator<const BidirectionalRange>::type>
gather (
ForwardRange &range,
typename boost::range_iterator<ForwardRange>::type pivot,
const BidirectionalRange &range,
typename boost::range_iterator<const BidirectionalRange>::type pivot,
Pred pred )
{
return boost::algorithm::gather ( boost::begin ( range ), boost::end ( range ), pivot, pred );