filledarray.hh

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// -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
// vi: set et ts=4 sw=2 sts=2:
// SPDX-FileCopyrightInfo: Copyright © DUNE Project contributors, see file LICENSE.md in module root
// SPDX-License-Identifier: LicenseRef-GPL-2.0-only-with-DUNE-exception
 
#ifndef DUNE_COMMON_FILLED_ARRAY_HH
#define DUNE_COMMON_FILLED_ARRAY_HH
 
#include <array>
#include <cstddef>
#include <utility>
 
#include <dune/common/indices.hh>
 
namespace Dune
{
 
  template<std::size_t n, class T>
  constexpr std::array<T, n> filledArray(const T& t)
  {
    return unpackIntegerSequence([&](auto... i) {
      return std::array<T, n>{((void)(i),t)...};
    }, std::make_index_sequence<n>{});
  }
 
} // end namespace Dune
 
#endif // DUNE_COMMON_FILLED_ARRAY_HH