C++自己用模板减少工作量

佚名 6年前 (2019-05-10) 随笔 1242人围观抢沙发百度已收录

今天写代码，遇到这样一个类似如下的需求:

auto componentClassSavedByPLC = std::make_shared<ComponentClassSavedByPLC>();
    m_componentClassies.emplace_back(componentClassSavedByPLC);

    auto componentClassSavedByDCSLocalControl = std::make_shared<ComponentClassSavedByDCSLocalControl>();
    m_componentClassies.emplace_back(componentClassSavedByDCSLocalControl);

    auto componentClassSavedByCCS = std::make_shared<ComponentClassSavedByCCS>();
    m_componentClassies.emplace_back(componentClassSavedByCCS);

    auto componentClassSavedBySIS_1 = std::make_shared<ComponentClassSavedBySIS_1>();
    m_componentClassies.emplace_back(componentClassSavedBySIS_1);
    
    auto componentClassSavedBySIS_2 = std::make_shared<ComponentClassSavedBySIS_2>();
    m_componentClassies.emplace_back(componentClassSavedBySIS_2);

    auto componentClassSavedBySLNIPLC = std::make_shared<ComponentClassSavedBySLNIPLC>();
    m_componentClassies.emplace_back(componentClassSavedBySLNIPLC);

    auto componentClassSavedByPLCLocalControl = std::make_shared<ComponentClassSavedByPLCLocalControl>();
    m_componentClassies.emplace_back(componentClassSavedByPLCLocalControl);

    auto componentClassSavedByLocalInstrument = std::make_shared<ComponentClassSavedByLocalInstrument>();
    m_componentClassies.emplace_back(componentClassSavedByLocalInstrument);

    auto componentClassSavedByPanelInstrument = std::make_shared<ComponentClassSavedByPanelInstrument>();
    m_componentClassies.emplace_back(componentClassSavedByPanelInstrument);

    auto componentClassSavedByBehindPanelInstrument = std::make_shared<ComponentClassSavedByBehindPanelInstrument>();
    m_componentClassies.emplace_back(componentClassSavedByBehindPanelInstrument);

    auto componentClassSavedByLocalPanelInstrument = std::make_shared<ComponentClassSavedByLocalPanelInstrument>();
    m_componentClassies.emplace_back(componentClassSavedByLocalPanelInstrument);

    auto componentClassSavedByFarInstrument = std::make_shared<ComponentClassSavedByFarInstrument>();
    m_componentClassies.emplace_back(componentClassSavedByFarInstrument);

    auto componentClassSavedByTracedInstrument = std::make_shared<ComponentClassSavedByTracedInstrument>();
    m_componentClassies.emplace_back(componentClassSavedByTracedInstrument);

就是执行的代码一样，类型不一样，于是我在hpp里面写上如下代码：

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template <class T>
std::shared_ptr<T> generateInstrumentComponent()
{
    std::shared_ptr<T> componentClass = std::make_shared<T>();
    return componentClass;
}

后面每个改动都直接在这个函数里面改动就行了，每个代码直接改成

auto componentClass = generateInstrumentComponent<ComponentClassSavedByDCS>();
m_componentClassies.emplace_back(componentClass);

就行了，要学会用高级工具！