Function switch_

gil/std.base.hpp:133–138

}

static constexpr auto switch_(auto expr) noexcept {
  return [=](auto... cases) {
    constexpr auto switcher = global_(_impl_::switcher);
    return block_(switcher = expr, _impl_::switch_impl(*switcher, cases...));
  };
}

static constexpr auto none_ = lib::ir::IR{lib::none::None{}};