Thread: Vector of My Datatype + Func

  1. #1
    Something Clever ginoitalo's Avatar
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    Vector of My Datatype + Func

    Code + Error :

    class Something{
    private:
    vector <F_Letter> *all_letters;
    public:
    void show();
    };

    I need to be able to say something like :

    all_letters[5].show();

    What I get :
    error C2039: 'show' : is not a member of 'vector<class F_Letter,class std::allocator<class F_Letter> >'

  2. #2
    geek SilentStrike's Avatar
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    Code:
    class Something{
    private:
    vector <F_Letter> all_letters;
    public:
    void show();
    };
    The vector provides an [] operator, the pointer itself natively supports the [], so you would have needed to use two [] in order to have value semantics on the F_Letter if you used a vector <F_Letter>*, rather than a vector<F_Letter>
    Prove you can code in C++ or C# at TopCoder, referrer rrenaud
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  3. #3
    Something Clever ginoitalo's Avatar
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    The Vector is used to store pointers of objects that are of my own datatype. So, how would I code the Vector to hold pointers to my datatype then call the show() function on lets say the 3rd pointer.

    Thanks a ton

  4. #4
    geek SilentStrike's Avatar
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    Code:
    class Something{
    private:
    vector <F_Letter*> all_letters;
    public:
    void show();
    };
    
    Something aSomething;
    aSomething.all_letters[3]->show();  // easiest way, use -> operator
    *(aSomething.all_letters[3]).show(); // uglier way
    Prove you can code in C++ or C# at TopCoder, referrer rrenaud
    Read my livejournal

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