Réf. : [Haskell-cafe] Re: circular imports

[Johannes Waldmann]

Henning Thielemann <schlepptop <at> henning-thielemann.de> writes:

> As I see there is no cycle in the types. How about defining Game, Rule,
> Obs in private modules, like Private.Game, Private.Rule, Private.Obs,
> and implementing the functions in public modules like Game, Rule, Obs ?

I guess that conflicts with the advice of putting the
functions (behaviour) close to the data that it concerns.

But if a function mentions two types (and the types are separate),
it requires a decision -  in OO as well: you would (arbitrarily) 
make them a method of one class or the other.

J.W.