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build fix after d1dc0e2

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(cherry picked from commit c0f8e8535a)
This commit is contained in:
Treeston
2019-07-19 20:37:22 +02:00
committed by Shauren
parent e94dca132b
commit 611ddfee3c
1 changed files with 29 additions and 0 deletions
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29
src/common/Utilities/Containers.h
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@@ -18,6 +18,7 @@
#ifndef TRINITY_CONTAINERS_H
#define TRINITY_CONTAINERS_H
#include "advstd.h"
#include "Define.h"
#include "Random.h"
#include <algorithm>
@@ -273,6 +274,34 @@ namespace Trinity
}
}
template <typename Container, typename Predicate>
std::enable_if_t<advstd::is_move_assignable_v<decltype(*std::declval<Container>().begin())>, void> EraseIf(Container& c, Predicate p)
{
auto wpos = c.begin();
for (auto rpos = c.begin(), end = c.end(); rpos != end; ++rpos)
{
if (!p(*rpos))
{
if (rpos != wpos)
std::swap(*rpos, *wpos);
++wpos;
}
}
c.erase(wpos, c.end());
}
template <typename Container, typename Predicate>
std::enable_if_t<!advstd::is_move_assignable_v<decltype(*std::declval<Container>().begin())>, void> EraseIf(Container& c, Predicate p)
{
for (auto it = c.begin(); it != c.end();)
{
if (p(*it))
it = c.erase(it);
else
++it;
}
}
/**
* Returns a mutable reference to element at index i
* Will resize vector if neccessary to ensure element at i can be safely written