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template<unsigned arity, typename Signature, typename Combiner,
    typename Group, typename GroupCompare, typename SlotFunction,
    typename ExtendedSlotFunction, typename Mutex>
  class signalN;
  // partial template specialization
  template<typename Signature, typename Combiner, typename Group,
    typename GroupCompare, typename SlotFunction,
    typename ExtendedSlotFunction, typename Mutex>
  class signalN<BOOST_SIGNALS2_NUM_ARGS, Signature, Combiner, Group,
    GroupCompare, SlotFunction, ExtendedSlotFunction, Mutex> {};

这是一个如上所述的类。但是,eclipse大纲视图显示这是一个功能。

在此处输入图像描述

遵循eclipse图标文档,这绝对是一个功能。

https://help.eclipse.org/mars/index.jsp?topic=%2Forg.eclipse.cdt.doc.user%2Freference%2Fcdt_u_icons.htm

这个类如何变成一个函数?

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