std::terminate();   set_terminate ，产生异常会调用该函数，默认是调用abort
void handler()
{
    cout << "error ~~~~~~~~~~~~~~~~~~";
}

    std::set_terminate(handler);//默认调用abort
    try
    {

        throw std::logic_error("logic error");
        throw std::runtime_error("mem leack");
    }
    catch (std::exception e)
    {


        cout << e.what();
    //    abort();
        std::terminate(); //终止处理异常
    }







std::ref 强制转换为引用&
std::move 强制转换 右值引用&&