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lang-cpp
DerivedI dofriend Base<Derived>;.static_cast<Derived*>(this)->closeImplementation()get invoked in theBase<Derived>class orDerived?" -- The line is insideBase<T>::close(). Why would it be invoked anywhere else? (Don't let yourself be confused by "more or less look like". You can rearrange code to get a better handle on the semantics of a class, but not to understand the syntax.)Base<T>::closebut the surrounding closure is not exactly clear to me. Is it executing in the context of theBaseclass or theDerivedclass? What type isthishere? Does it depend on it's closure?