Well, for your example frustration, the leading comma style would sort your problem nicely. As for the particulars… hmm, not sure. I use leading commas for both, so I never really noticed. It may be that since modules simply expose functions to other programs, the form is syntactically irrelevant except when the module is being loaded. I am quite curious about it now, though, so I hope there are some more knowledgeable folks with some input. On Jul 11, 2011, at 4:49 AM, L Corbijn wrote:
Hello,
I'm wondering why the trailing comma is allowed in export syntax, but not in record syntax, here an example module Foo ( export1, -- is allowed ) where
data Type = Type { record1 :: Foo, -- is not allowed }
To me this seems quite inconsistent and sometimes quite frustrating, imagine the case that you want to temporarily remove the last record: data Type = Type { record1 :: Foo, -- record2 :: Bar } this would fail due to an extra comma that has to be commented out.
You could of course say that I'm using a bad style, but it remains that it seems to be inconsistent to allow a trailing comma in one place and not in the other. So is there an reason for this?
Lars Corbijn _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe