is_contained.hpp

Go to the documentation of this file. Or view the newest version in sPHENIX GitHub for file is_contained.hpp

// This file is part of the Acts project.
//
// Copyright (C) 2016-2018 CERN for the benefit of the Acts project
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.

#pragma once
namespace Acts {
namespace detail {
template <typename T, T target, T... values>
struct is_contained;

template <typename T, T target, T... others>
struct is_contained<T, target, target, others...> {
  enum { value = true };
};

template <typename T, T target>
struct is_contained<T, target, target> {
  enum { value = true };
};

template <typename T, T target, T next, T... others>
struct is_contained<T, target, next, others...> {
  enum { value = is_contained<T, target, others...>::value };
};

template <typename T, T target, T next>
struct is_contained<T, target, next> {
  enum { value = false };
};
}  // namespace detail
}  // namespace Acts