You can just do class B; class A { B* _b; }; and it'll be happy. | Hacker News

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Tyr42 on June 26, 2016 | parent | context | favorite | on: My Most Important C++ Aha Moments (2006)

You can just do

    class B;
    class A {
      B* _b;
    };

and it'll be happy.

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