Proposal: overhaul System.Process
jules at jellybean.co.uk
Wed May 14 10:23:54 EDT 2008
Bulat Ziganshin wrote:
> Hello Jules,
> Wednesday, May 14, 2008, 5:58:46 PM, you wrote:
>> Surely you can put the nicest new names in another module
>> (or whatever)
>> programs which use the old versions will still work. Programs which want
>> the nicely named new versions can import from the new module.
> yes, it will work, but may become source of confusion: it will be
> impossible to copy-paste code between modules importing old and new
> functions and it will be impossible to understand behavior of code
> snippet without looking into imports
True enough. And this is already true. Consider the Traversable/Foldable
functions which 'replace' the Data.List / Control.Monad versions.
I feel haskell is slightly weak at this kind of book-keeping actually.
It's annoying that having decided to prefer the 'new' mapM_, and hiding
the old from Control.Monad, you have to also hide it from the other
places which re-export it.
I don't have a concrete suggestion for how to improve this :-( But the
problem will surely come up again and again as the libraries get bigger
and more things get either deprecated or generalised.
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