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add forgotten file again

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Jeff Becker 2021-04-06 10:36:42 -04:00
parent 2fa24b5eae
commit b01e20b4cb
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1 changed files with 23 additions and 0 deletions
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23
llarp/util/algorithm.hpp Normal file
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@ -0,0 +1,23 @@
#pragma once
#include <algorithm>
namespace llarp::util
{
/// remove items from a container if a predicate is true
/// return the number of items removed
constexpr auto erase_if = [](auto& container, auto&& pred) -> std::size_t {
std::size_t removed = 0;
for (auto itr = container.begin(); itr != container.end();)
{
if (pred(*itr))
{
itr = container.erase(itr);
removed++;
}
else
itr++;
}
return removed;
};
} // namespace llarp::util