Returning pointer to a nested class

This is a discussion on Returning pointer to a nested class within the C++ Programming forums, part of the General Programming Boards category; I'm trying to compile this simple code in g++ 4.0.1: Code: #include <cstdlib> template <class Data> class MyClass { public: ...

  1. #1
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    Aug 2006
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    Returning pointer to a nested class

    I'm trying to compile this simple code in g++ 4.0.1:
    Code:
    #include <cstdlib>
    
    template <class Data> class MyClass
    {
      public:
    
      private:
    
        class Inside {};
    
        Inside* __func(int x);
    };
    
    template <class Data> Inside* MyClass<Data>::__func(int x) // This is line 14
    { return NULL; }
    And I get :
    test1.cpp:14: error: expected constructor, destructor, or type conversion before * token

    I've tried to fix it to no avail, could anyone please explain to me what am I doing wrong ?
    Many thanks in advance,
    stingerkiss

  2. #2
    Registered User
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    Jan 2005
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    7,319
    You have to qualify Inside with MyClass<Data>:: just like you do with __func.

    BTW, identifiers with double underscores are reserved for the implementation, so you shouldn't really be using them in your own code.

  3. #3
    Code Goddess Prelude's Avatar
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    9,796
    Code:
    template <class Data>
    typename MyClass<Data>::Inside* MyClass<Data>::__func(int x)
    { return NULL; }
    My best code is written with the delete key.

  4. #4
    Registered User
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    Aug 2006
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    Wow! thanks to the fast response! It worked!!

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