Method fill

include/avnd/common/array.hpp:10–14

{
  T arr[N];
  constexpr void fill(const auto& val) noexcept
  {
    for(int i = 0; i < N; i++)
      arr[i] = val;
  }
  constexpr T& operator[](std::size_t i) noexcept { return arr[i]; }
  constexpr const T& operator[](std::size_t i) const noexcept { return arr[i]; }
};