case x of A a -> .. B b -> .. C c -> f c D d -> f d where f cd = ... On 15 Jun 2017, at 15:11, 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.
Something like "(C|D) c -> ..."
=== Best regards, Paul _______________________________________________ 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.