As discussed on IRC, your approach below looks right to me: dropWhile (isLevityTy . idType) args. But you then said this wasn't working for you. What does (map idType args) say?
Richard On Jan 24, 2016, at 8:58 PM, Ömer Sinan Ağacan <omeraga...@gmail.com> wrote: > Hi all, > > I'm looking for a reliable way of dropping levity args from TyCon > applications. > When I know that a particular TyCon gets some number of levity args, I can > just > drop the args manually (for example, I can drop the first half of arguments of > a tuple TyCon application) but the code looks fragile (what happens if I use a > different TyCon in the future) and confusing to the reader because it looks > like this: > > drop (length args `div` 2) args > > Ideally it'd look like this: > > dropWhile isLevityArg args > > Now, there's a function called isLevityTy, but I don't understand what it's > supposed to do. This doesn't do anyting to 'Boxed and 'Unboxed arguments: > > dropWhile (isLevityArg . idType) args > > Any ideas on this? > > Thanks.. _______________________________________________ ghc-devs mailing list ghc-devs@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs
