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Home/ Questions/Q 343783
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Editorial Team
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Editorial Team
Asked: May 12, 20262026-05-12T10:55:47+00:00 2026-05-12T10:55:47+00:00

I can forward declare a function in a namespace by doing this: void myNamespace::doThing();

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I can forward declare a function in a namespace by doing this:

void myNamespace::doThing();

which is equivalent to:

namespace myNamespace
{
  void doThing();
}

To forward declare a class in a namespace:

namespace myNamespace
{
  class myClass;
}

Is there a shorter way to do this? I was thinking something along the lines of:

class myNamespace::myClass;
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  1. Editorial Team
    Editorial Team
    2026-05-12T10:55:47+00:00Added an answer on May 12, 2026 at 10:55 am

    No, however with a little reformatting

    namespace myNamespace { class myClass; }
    

    isn’t much worse than

    class myNamespace::myClass;
    
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