mirror of
https://github.com/FairRootGroup/FairMQ.git
synced 2025-10-13 08:41:16 +00:00
34 lines
1.2 KiB
C++
34 lines
1.2 KiB
C++
/********************************************************************************
|
|
* Copyright (C) 2017 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH *
|
|
* *
|
|
* This software is distributed under the terms of the *
|
|
* GNU Lesser General Public Licence (LGPL) version 3, *
|
|
* copied verbatim in the file "LICENSE" *
|
|
********************************************************************************/
|
|
|
|
#ifndef FAIR_MQ_TOOLS_CPPSTL_H
|
|
#define FAIR_MQ_TOOLS_CPPSTL_H
|
|
|
|
#include <functional>
|
|
#include <memory>
|
|
#include <type_traits>
|
|
|
|
namespace fair::mq::tools
|
|
{
|
|
|
|
// provide an enum hasher to compensate std::hash not supporting enums in C++11
|
|
template<typename Enum>
|
|
struct HashEnum
|
|
{
|
|
auto operator()(const Enum& e) const noexcept
|
|
-> typename std::enable_if<std::is_enum<Enum>::value, std::size_t>::type
|
|
{
|
|
using _type = typename std::underlying_type<Enum>::type;
|
|
return std::hash<_type>{}(static_cast<_type>(e));
|
|
}
|
|
};
|
|
|
|
} // namespace fair::mq::tools
|
|
|
|
#endif /* FAIR_MQ_TOOLS_CPPSTL_H */
|