Compilation Firewalls

This is a discussion on Compilation Firewalls within the C++ Programming forums, part of the General Programming Boards category; Hello everyone, Any ideas why Pimpl idiom is called "Compilation Firewalls"? :-) http://www.gotw.ca/gotw/024.htm I have thought for a while, and ...

  1. #1
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    Compilation Firewalls

    Hello everyone,


    Any ideas why Pimpl idiom is called "Compilation Firewalls"? :-)

    http://www.gotw.ca/gotw/024.htm

    I have thought for a while, and I think client code does not need to compile in Pimpl idiom, so like a firewall to block compile, it is called "Compilation Firewalls".

    Any ideas why it is named "Compilation Firewalls"?


    thanks in advance,
    George
    Last edited by George2; 03-15-2008 at 07:58 AM.

  2. #2
    The larch
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    It is just a metaphor. A firewall is a fire-proof wall to stop fire from spreading. Pimpl is a technique to reduce code interdependencies and build times, it is a way to minimize what needs to be recompiled.
    I might be wrong.

    Thank you, anon. You sure know how to recognize different types of trees from quite a long way away.
    Quoted more than 1000 times (I hope).

  3. #3
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    Thanks anon,


    Question answered.

    Quote Originally Posted by anon View Post
    It is just a metaphor. A firewall is a fire-proof wall to stop fire from spreading. Pimpl is a technique to reduce code interdependencies and build times, it is a way to minimize what needs to be recompiled.

    regards,
    George

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