Empty Datatypes in GHC 5?

[Simon Peyton-Jones]

Done, in the HEAD at least.

Simon

| -----Original Message-----
| From: Ashley Yakeley [mailto:ashley@semantic.org]=20
| Sent: 08 June 2001 01:14
| To: GHC List
| Subject: Empty Datatypes in GHC 5?
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| I just joined this list after finally obtaining an i386=20
| machine primarily=20
| for the purpose of running GHC (I ssh/ftp to it from my Mac).
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| A quick question: is there an option to allow empty datatypes in GHC=20
| 5.00? I couldn't see one in the manual. They are useful for type=20
| parameterisation, for instance:
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|  data Zero;
|  data Succ n;
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| Unfortunately this is contrary to the Haskell Report.=20
| Nevertheless, Hugs=20
| allows it. But GHC, apparently, does not.
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| --=20
| Ashley Yakeley, Seattle WA
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