pack_traits.h

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/*
 * Copyright 2018 Universidad Carlos III de Madrid
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#ifndef GRPPI_COMMON_PACK_TRAITS_H
#define GRPPI_COMMON_PACK_TRAITS_H
 
namespace grppi {
 
namespace internal {
 
template <int Index, typename ... T>
using requires_index_last =
  std::enable_if_t<(Index == (sizeof...(T) - 1)), int>;
 
template <int Index, typename ... T>
using requires_index_not_last =
  std::enable_if_t<(Index < sizeof...(T) - 1), int>;
 
} // end namespace internal
 
} // end namespace grppi
 
#endif