Syntax error in ST.hs

Andy Moran moran@galois.com
Fri, 28 Mar 2003 11:15:56 -0800


> I noticed this while going through the SOE book:
>
> $ hugs
> ERROR "/lusr/lib/hugs/lib/exts/ST.hs":49 - Syntax error in type
> expression (unexpected `.')=20

This is due to the fact that ST.hs uses forall types, which are not part =
of=20
Haskell 98.  The error reflects is due to the "." in "(forall s . ST s a)=
=20
-> a" because that's not part of Haskell 98 type syntax.

Run hugs with -98 to use this and many other extensions, and you should b=
e=20
fine.

A

--=20
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