Hmm, seems there is a way: {-# LANGUAGE ViewPatterns #-} isCD (C c) = c isCD (D c) = c case x of A a -> .. B b -> .. (isCD -> x) -> ..process-x..
On 2017-06-15 16:11, Baa wrote:
Hello, Everyone!
As I understand "MultiCase" proposal was not approved, so my question is: is there alternatives to multi-case? I have code like:
case x of A a -> .. B b -> .. C c -> --same-- D c -> --same--
and I want to merge code of "C c" with "D c" branch. Anywhere, in general: is any alternatives to make "OR"s in patterns? I don't see how to do it with pattern guards, pattern synonyms, views extensions and don't see another related extensions.
Create a function.
Regards,
_______________________________________________ Haskell-Cafe mailing list To (un)subscribe, modify options or view archives go to: http://mail.haskell.org/cgi-bin/mailman/listinfo/haskell-cafe Only members subscribed via the mailman list are allowed to post.