It's hard to distinguish a constructor from a class in an
export list.
S
| -----Original Message-----
| From: Alastair David Reid [mailto:[EMAIL PROTECTED]]
| Sent: 20 September 2001 19:38
| To: Simon Marlow
| Cc: Ian Lynagh; [EMAIL PROTECTED]; [EMAIL PROTECTED]
| Subject: Re: Prelude and (:) and []((:), []) bugs?
|
|
|
| > Ah, I forgot that you can't export a constructor on its own.
|
| You can't?
|
| I probably knew this once but looking at it now, it seems
| kinda surprising. Haskell's module system is supposed to be
| just namespace control --nothing more-- so why is it
| preventing me from doing something which is perfectly safe
| and well-defined?
|
| I'll readily agree that there's no strong motivation for
| exporting a constructor on its own (I think the only reason
| Hugs allows it is just so we can export (:) from the Prelude)
| but what is the motivation for disallowing it?
|
| --
| Alastair Reid [EMAIL PROTECTED]
| http://www.cs.utah.edu/~reid/
|
|
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