#4148: improve new recursive do syntax
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Reporter: guest | Owner:
Type: feature request | Status: new
Priority: normal | Milestone:
Component: Compiler | Version: 6.12.3
Keywords: | Difficulty:
Os: Unknown/Multiple | Testcase:
Architecture: Unknown/Multiple | Failure: None/Unknown
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Comment(by simonmar):
Replying to [comment:1 simonpj]:
> The change was in fact explicitly highlighted in my email to the ghc-
users list http://www.mail-archive.com/glasgow-haskell-
us...@haskell.org/msg17406.html.
>
> The difficulty I see with your suggestion is that it requires arbitrary
lookahead to resolve the ambiguity.
Perhaps I'm being stupid, but I can't see how it needs arbitrary
lookahead. Could you explain that?
> And in any case, you can always use 'mdo', right? What's wrong with
doing that?
well, we deprecated the `mdo` notation.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4148#comment:2>
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