It is common to export an Foo.Internal module that has the internals of your library in it, with a doc at the top that this is meant for internal use. It can be used both for testing and sometimes the user of your library can do something with it you didn't think of if he has access to the internals.

Hm, but if I have 10 modules in src/ (m1.hs, ..., m10.hs) I must create, for example 10 folders like src/m1/, ..., src/m10/ and their individual M*.Internal module, right? So, `m1`, for example, becomes: src/ m1/ Internal.hs All.hs ? And `All.hs` imports and re-exports module (or its part only) `Internal.hs`? Something like this? === Best regards, Paul

Thank you, David!

All I can give are examples. These have single Internal modules.

https://hackage.haskell.org/package/text-1.2.2.2/docs/Data-Text-Internal.htm... https://hackage.haskell.org/package/aeson-1.2.2.0/docs/Data-Aeson-Internal.h... https://hackage.haskell.org/package/pipes-4.3.5/docs/Pipes-Internal.html https://hackage.haskell.org/package/reflex-0.4.0/docs/Reflex-Spider-Internal...

whereas opaleye for example has an entire Internal hierarchy.

https://hackage.haskell.org/package/opaleye-0.6.0.0

On Mon, Oct 2, 2017 at 6:49 AM, Baa wrote:

...

...

It is common to export an Foo.Internal module that has the internals of your library in it, with a doc at the top that this is meant for internal use. It can be used both for testing and sometimes the user of your library can do something with it you didn't think of if he has access to the internals.

Hm, but if I have 10 modules in src/ (m1.hs, ..., m10.hs) I must create, for example 10 folders like src/m1/, ..., src/m10/ and their individual M*.Internal module, right? So, `m1`, for example, becomes:

src/ m1/ Internal.hs All.hs ?

And `All.hs` imports and re-exports module (or its part only) `Internal.hs`? Something like this?

=== Best regards, Paul _______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners