Create a std::bitset from an initializer_list<bool>

make_bitset.cpp

// NB: The first value in the list is the smallest bit (a.k.a "little endian").
template<int Size>
constexpr auto make_bitset(const std::initializer_list<bool> &boolean_list) {
    auto bits = 0ul;
    auto mask = 1ul;
    for (auto boolean : boolean_list) {
        bits |= boolean ? mask : 0ul;
        mask <<= 1;
    }
    return std::bitset<Size>{bits};
}

// Usage
// -----

// Will give: {1, 0, 1, 0, 0, 1, 1}
constexpr auto values = detail::make_bitset<7>({
  true,
  true,
  false,
  false,
  true,
  false,
  true,
});