Method release_ref

include/wasm.hh:562–567

  template<class T> inline auto get() const -> T;

  auto release_ref() -> own<Ref> {
    assert(is_ref());
    auto ref = impl_.ref;
    impl_.ref = nullptr;
    return own<Ref>(ref);
  }

  auto copy() const -> Val {
    if (is_ref() && impl_.ref != nullptr) {