[Haskell-beginners] Defining an instance: Syntax that works exactly sometimes

Brandon Allbery allbery.b at gmail.com
Fri Jan 23 20:01:53 UTC 2015

On Fri, Jan 23, 2015 at 2:39 PM, Jeffrey Brown <jeffbrown.the at gmail.com>

> Should I always look first in the 98 Report, and only if I don't find
> something there then look in the User's Guide? Should I always look through
> both, lest something in the 98 Report be obsolete? Is nothing in it
> obsolete?

You really want the 2010 report, not the 98 one.

You may first check the extensions part of the GHC manual:

Usually extensions will be called out with a pragma, though, so if there
are not {-# LANGUAGE #-} sections at the top then you probably don't need
to check the GHC manual. If there are, look over the sections of the GHC
manual relating to those LANGUAGE pragmas.

brandon s allbery kf8nh                               sine nomine associates
allbery.b at gmail.com                                  ballbery at sinenomine.net
unix, openafs, kerberos, infrastructure, xmonad        http://sinenomine.net
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