[darcs-users] [patch185] add a witnessed zipper type (and 13 more)

Jason Dagit dagit at codersbase.com
Tue Mar 23 22:22:16 UTC 2010


On Tue, Mar 23, 2010 at 1:47 PM, Ganesh Sittampalam <ganesh at earth.li> wrote:

> On Tue, 23 Mar 2010, Jason Dagit wrote:
>
>  On Sat, Mar 20, 2010 at 2:58 PM, Ganesh Sittampalam <bugs at darcs.net>
>> wrote:
>>
>>
>>> Ganesh Sittampalam <ganesh at earth.li> added the comment:
>>>
>>> On Sat, 20 Mar 2010, Jason Dagit wrote:
>>>
>>>  Thanks!  This is a really cool patch set.  I've wanted a witnessed
>>>> zipper
>>>> for a long time!
>>>>
>>>
>>> BTW, this is only a list zipper, not a tree zipper, so it's not as cool
>>> as
>>> you might hope :-)
>>>
>>>
>> Please go on.  Why would I be excited about a tree zipper?  What uses do
>> you
>> have in mind?
>>
>
> None in particular, it's just that a list zipper isn't really a very
> interesting structure IMO. YMMV :-)
>

It is when it improves the SelectChanges code :)

Jason
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