Defaults for superclass methods

[John Meacham]

On Tue, Apr 11, 2006 at 11:35:09AM +0100, Simon Marlow wrote:
> On 11 April 2006 11:08, Ross Paterson wrote:
> 
> > On Tue, Apr 11, 2006 at 11:03:22AM +0100, Simon Marlow wrote:
> >> This is a rather useful extension, and as far as I can tell it
> >> doesn't have a ticket yet: 
> >> 
> >>   http://www.haskell.org//pipermail/libraries/2005-March/003494.html
> >> 
> >> should I create a ticket?  Is there any reason it might be hard to
> >> implement?
> > 
> > There are a range of proposals, but none of them are implemented.
> > Wouldn't that rule them out for Haskell'?
> 
> If it's not clear which is the right way to go, then yes I guess that
> does rule it out.  Could you summarise the proposals?  If there was a
> clear winner, and it was easy enough to implement, perhaps we can knock
> up a prototype in time.

As I recall, this was brought up a few times during the class alias
discussion and there were good technical reasons why it would be
tricky to define a sane semantics for it. as in, it's harder than it first
looks.

        John

-- 
John Meacham - ⑆repetae.net⑆john⑈