[Haskell] Proposal for a Standard of Abstract Collections (with Reference Implementation)

Dylan Thurston dpt at lotus.bostoncoop.net
Mon Mar 22 02:21:33 EST 2004

It looks interesting and I'm still looking at it, although I think
many of the language extensions need to be better thought out.  But it
exhibits the "creeping Eq" problem: your hierarchy starts

class (Eq (coll a), Eq a)
    => Collection coll a 
where ...

If this is to replace lists, this is unacceptable: I can't have lists
of (say) functions?

Collection classes should not require Eq instances on the members,
except when necessary!


-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 189 bytes
Desc: Digital signature
Url : http://www.haskell.org//pipermail/libraries/attachments/20040322/b3aea001/attachment.bin

More information about the Libraries mailing list