RE: Repeated variables in type family instances - UndecidableInstances

2013-06-24 Thread Richard Eisenberg
family with closed family helpers. -Original Message- From: glasgow-haskell-users-boun...@haskell.org [mailto:glasgow-haskell- users-boun...@haskell.org] On Behalf Of AntC Sent: 24 June 2013 03:59 To: glasgow-haskell-users@haskell.org Subject: Re: Repeated variables in type family

Re: Repeated variables in type family instances - UndecidableInstances

2013-06-23 Thread AntC
Richard Eisenberg eir at cis.upenn.edu writes: ... The plan of action is to use the check labeled (B) on the wiki page. This check does *not* ban all nonlinear type families. Thanks Richard, great! Then the focus of attention moves to infinite types. I don't think anybody intentionally