On 27 December 2012 12:46, H. Hirzel <hannes.hirzel at gmail.com> wrote:
> Thank you for providing this, Frank.
>
> I assume I can edit a huge XMLDocument I keep in memory with it?
>
> An example script?
>
> There is still a load problem when loading it through SqueakMap into
> Squeak4.4-12324

Oh sigh, that was a lame error on my part. I'm having a great deal of
trouble uploading the corrected install script to SM though.

The correct load script is this:

Installer ss3 install: 'ConfigurationOfZippers'.
(Smalltalk at: #ConfigurationOfZippers) load

Note the "ss3" - the broken version says "cache". Deleting the file in
my account's files section makes the file disappear from the list but
doesn't actually delete anything (because I can still download it). If
I try upload a new version, it looks like SM doesn't replace the file.

frank

> --Hannes
>
>
>
> On 12/27/12, Frank Shearar <frank.shearar at gmail.com> wrote:
>> A zipper is a data structure that lets you efficiently "modify" an
>> immutable data structure. "Modify", because a zipper creates a new,
>> updated, data structure that reuses as much of the original structure.
>> Local modifications and navigations are constant time.
>>
>> This zipper implementation lets you walk over an arbitrary graph
>> structure by leaving the decision of what "up", "down", "left" and
>> "right" means to you, the programmer.
>>
>> (Zippers should also work just fine in Squeak 4.3, Pharo 1.4 and Pharo
>> 2.0.)
>>
>> frank
>>
>>
>
>
>