I use them sometimes, but would do that much more if they didn't require adding an extension.
Roman * Edward Kmett <ekm...@gmail.com> [2013-05-17 15:24:27-0400] > I personally use tuple sections a fair bit, though admittedly mostly for > simple (,a) or (a,) cases. > > > On Fri, May 17, 2013 at 3:01 PM, Ian Lynagh <i...@well-typed.com> wrote: > > > On Fri, May 17, 2013 at 02:04:44PM -0400, Edward Kmett wrote: > > > My main concern is its a really weird corner case for the grammar to > > > remember for tuple sections and it does have very weird grammar > > > specification issues. > > > > Tuple sections could look like > > (True, _) > > rather than > > (True,) > > > > Does anyone know how common tuple sections are, incidentally? They've > > been around since GHC 6.12, so it would be interesting to know if people > > are actually using them. > > > > > I really have no objection to it for the other cases. It'd make export > > > lists cleaner, > > > > Actually, you are already allowed an extra trailing comma in import and > > export lists. > > > > > maybe a few other cases, but how often can you really say > > > you can meaningfully comment out one field of a tuple have have the > > > surrounding code make any sense? > > > > It happens occasionally, especially when simplifying code while > > debugging. > > > > Commenting out list items is much more common, though. > > > > I'd be in favour of allowing a trailing or leading comma anywhere that > > comma is used as a separator. TupleSections would need to be changed or > > removed, though. > > > > > > Thanks > > Ian > > -- > > Ian Lynagh, Haskell Consultant > > Well-Typed LLP, http://www.well-typed.com/ > > > > > > _______________________________________________ > > Haskell-prime mailing list > > Haskell-prime@haskell.org > > http://www.haskell.org/mailman/listinfo/haskell-prime > > > _______________________________________________ > Haskell-prime mailing list > Haskell-prime@haskell.org > http://www.haskell.org/mailman/listinfo/haskell-prime _______________________________________________ Haskell-prime mailing list Haskell-prime@haskell.org http://www.haskell.org/mailman/listinfo/haskell-prime
