52 lines
1.6 KiB
C++
52 lines
1.6 KiB
C++
// Copyright 2010-2025 Google LLC
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef OR_TOOLS_BASE_ARRAY_H_
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#define OR_TOOLS_BASE_ARRAY_H_
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//! @todo(corentinl) std::to_array available in C++20.
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#include <array>
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#include <cstddef>
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#include <type_traits>
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#include "absl/utility/utility.h"
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#include "ortools/base/array_internal.h"
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namespace gtl {
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/// A utility function to build `std::array` objects from built-in arrays
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/// without specifying their size.
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///
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/// Example:
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/// @code{.cpp}
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/// auto b = gtl::to_array<std::pair<int, int>>({
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/// {1, 2},
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/// {3, 4},
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/// });
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/// @endcode
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template <typename T, std::size_t N>
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constexpr std::array<std::remove_cv_t<T>, N> to_array(T (&ts)[N]) {
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return internal_array::to_array_internal(ts, absl::make_index_sequence<N>{});
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}
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template <typename T, std::size_t N>
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constexpr std::array<std::remove_cv_t<T>, N> to_array(T (&&ts)[N]) {
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return internal_array::to_array_internal(std::move(ts),
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absl::make_index_sequence<N>{});
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}
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} // namespace gtl
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#endif // OR_TOOLS_BASE_ARRAY_H_
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