can someone please explain the hiding principle in inheritance ?

This is a discussion on can someone please explain the hiding principle in inheritance ? within the C++ Programming forums, part of the General Programming Boards category; basically i don't understand when and how to use it... Thanks in advance,...

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    can someone please explain the hiding principle in inheritance ?

    basically i don't understand when and how to use it...

    Thanks in advance,

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    C++ Witch laserlight's Avatar
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    What do you mean by "the hiding principle in inheritance"? Are you talking about abstraction and/or encapsulation (which is separate from inheritance), or are you talking about name hiding in inheritance?
    Quote Originally Posted by Bjarne Stroustrup (2000-10-14)
    I get maybe two dozen requests for help with some sort of programming or design problem every day. Most have more sense than to send me hundreds of lines of code. If they do, I ask them to find the smallest example that exhibits the problem and send me that. Mostly, they then find the error themselves. "Finding the smallest program that demonstrates the error" is a powerful debugging tool.
    Look up a C++ Reference and learn How To Ask Questions The Smart Way

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    i'm talking about the name hiding

    i'm talking about the name hiding

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    C++ Witch laserlight's Avatar
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    Quote Originally Posted by sharon182
    i'm talking about the name hiding
    Personally, I have not encountered a case where it was useful. In Effective C++, 3rd Edition, Meyers discusses why name hiding exists:
    The rationale behind this behavior is that it prevents you from accidentally inheriting overloads from distant base classes when you create a new derived class in a library or application framework. Unfortunately, you typically want to inherit the overloads. In fact, if you're using public inheritance and you don't inherit the overloads, you're violating the is-a relationship between base and derived classes that Item 32 explains is fundamental to public inheritance. That being the case, you'll almost always want to override C++'s default hiding of inherited names.
    I assume that you are aware of how this problem can be solved by using a using declaration.
    Quote Originally Posted by Bjarne Stroustrup (2000-10-14)
    I get maybe two dozen requests for help with some sort of programming or design problem every day. Most have more sense than to send me hundreds of lines of code. If they do, I ask them to find the smallest example that exhibits the problem and send me that. Mostly, they then find the error themselves. "Finding the smallest program that demonstrates the error" is a powerful debugging tool.
    Look up a C++ Reference and learn How To Ask Questions The Smart Way

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    thanks very much !! little bit clear...

    Quote Originally Posted by laserlight View Post
    Personally, I have not encountered a case where it was useful. In Effective C++, 3rd Edition, Meyers discusses why name hiding exists:

    I assume that you are aware of how this problem can be solved by using a using declaration.
    .....

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