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Takes fn by forwarding ref. in for_each_pair, resolves #4148

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Daniel J. Hofmann 2017-06-13 12:33:03 +02:00 committed by Patrick Niklaus
parent 27ed69b08f
commit b68d79407e
1 changed files with 6 additions and 6 deletions
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12
include/util/for_each_pair.hpp
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@ -3,6 +3,7 @@
#include <iterator>
#include <numeric>
#include <utility>
namespace osrm
{
@ -12,11 +13,11 @@ namespace util
// TODO: check why this is not an option here:
// std::adjacent_find(begin, end, [=](const auto& l, const auto& r){ return function(), false; });
template <typename ForwardIterator, typename Function>
Function for_each_pair(ForwardIterator begin, ForwardIterator end, Function function)
void for_each_pair(ForwardIterator begin, ForwardIterator end, Function &&function)
{
if (begin == end)
{
return function;
return;
}
auto next = begin;
@ -24,19 +25,18 @@ Function for_each_pair(ForwardIterator begin, ForwardIterator end, Function func
while (next != end)
{
function(*begin, *next);
std::forward<Function>(function)(*begin, *next);
begin = std::next(begin);
next = std::next(next);
}
return function;
}
template <class ContainerT, typename Function>
Function for_each_pair(ContainerT &container, Function function)
void for_each_pair(ContainerT &container, Function &&function)
{
using std::begin;
using std::end;
return for_each_pair(begin(container), end(container), function);
for_each_pair(begin(container), end(container), std::forward<Function>(function));
}
} // namespace util