Method ~LuaRef

include/dmlc/lua.h:593–599

}

inline LuaRef::~LuaRef() {
  if (state_ != nullptr) {
    state_->PRun_([this](lua_State* L) {
        luaL_unref(L, LUA_REGISTRYINDEX, ref_);
      });
  }
}

inline bool LuaRef::is_nil() const {
  return state_ == nullptr;