module P
  module C
    export foo
    foo() = 2
  end
  module A
    using ..C
  end
  module B
    using ..C
  end
end

Tested with
julia> P.A.C.foo()
2
  

On Tuesday, July 22, 2014 9:04:17 PM UTC-4, ggggg wrote:
>
> Lets say I'm making a package P.jl.  Inside P I define modules A, B and C 
> all in separate files. I'd like to use C inside of A and B, and export a 
> function from C from P. 
>
> So right now B looks like
> include("C.jl")
> module B
> using C
> B body
> end
>
> And A looks like
> include("C.jl")
> module A
> using C
> A body
> end
>
> And P looks like
> include("A.jl")
> include("B.jl")
> include("C.jl")
> module P
> using A,B,C
> P body
> end
>
> I suspect that I'm doing it wrong for a few reasons.
> 1. I'm using two lines to get a module instead of one (include + using)
> 2. I've included C three times in P.
> 3. Autoreload.jl is complaining 
>
> At the least it seems like I should remove "include("C.jl")" from P, which 
> seems to help.  I'd appreciate some general guidance.
>

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