simonpj at microsoft.com
Tue Aug 12 14:25:59 EDT 2008
Suggestions like this are a great help for improving the user manual. Thank you. I will fix.
| -----Original Message-----
| From: glasgow-haskell-users-bounces at haskell.org [mailto:glasgow-haskell-
| users-bounces at haskell.org] On Behalf Of Yitzchak Gale
| Sent: 12 August 2008 16:48
| To: Simon Peyton-Jones
| Cc: GHC Users Mailing List; Ashley Yakeley
| Subject: Re: Orphan Instances
| <Moving this side point to the ghc users list...>
| Ashley Yakely wrote:
| >> What is an orphan instance, and why do we care about them?
| Simon Peyton-Jones wrote:
| > They are documented in the GHC manual
| > http://www.haskell.org/ghc/docs/latest/html/users_guide/separate-
| Thanks for the nice explanation there. Since you brought it
| up, though, the explanation might be made even clearer with
| two small changes:
| 1. The term "instance head" is used throughout the explanation,
| beginning already with the second paragraph ("the head of the
| instance..."). However, that term is only defined near the very end
| '(the part after the "=>")'. For those who do not already know the
| surprise ending, this makes the explanation read rather like a
| mystery story.
| 2. I believe that the text "by setting a = Int" was meant to be
| "by setting a = T".
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