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Home/ Questions/Q 68101
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Asked: May 10, 20262026-05-10T19:21:50+00:00 2026-05-10T19:21:50+00:00

Is there a way to hide private data members of a C++ class away

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Is there a way to hide private data members of a C++ class away from its users, in the cpp file? I think of the private members as part of the implementation and it seems a little backwards to declare them in the header file.

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  1. 2026-05-10T19:21:50+00:00Added an answer on May 10, 2026 at 7:21 pm

    The ‘pimpl’ idiom is how this is generally handled.

    See

    • http://www.gotw.ca/gotw/024.htm
    • http://www.gotw.ca/gotw/028.htm
    • http://herbsutter.com/gotw/_100/ (updated for C++11)
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