[Haskell-beginners] single responsibility principle vs functional
ml at isaac.cedarswampstudios.org
Tue Jan 26 21:30:17 EST 2010
Joe Van Dyk wrote:
> So I'm still pretty new to functional programming.
> In OOP, you have the concept of each class having a
> single-responsibility (or reason for changing). See
> I'm having problems seeing how that concept maps to functional
> programming. Perhaps it doesn't?
It's called "modularity" in my book, and it even works in C. You put
functions/data-structures/etc. that are related* to each other in the
same file, or directory-of-files, or entire library. (*a quite similar
concept to your single-responsibility principle)
In Haskell, there is a module system that lets you choose what to export
/ not export from which files (in a more principled way than in C).
Think of it as "private"(a la OOP) implementation details if you like.
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