[svn.haxx.se] · SVN Dev · SVN Users · SVN Org · TSVN Dev · TSVN Users · Subclipse Dev · Subclipse Users · this month's index

Re: Ev2 using move-away and move-here

From: Julian Foad <julianfoad_at_btopenworld.com>
Date: Wed, 14 Aug 2013 09:07:02 +0100 (BST)

My intention is to present possible designs for Ev2, and allow us to consider which we prefer.  In particular, we need to decide how important it is to adhere to each of the principles including:

  - the Once Rule
  - avoidance of temporary paths (closely related to Once Rule)
  - alter-dir ("final set of children = {...}") before altering dir's children
  - sequential modification

since different designs may trade off one of these against the others.

Greg Stein wrote:

> In the wiki page you started, I thought we already solved the move
> issue by using the original state for the source. [...]

No, we didn't come up with an actual solution, we came up with an idea that *might* lead to a solution -- it felt like it should.  My gut feeling is it doesn't play well with the Ev2 principles, but I am still going to explore that idea further as a possible alternative and present either how it could work or why it couldn't.

- Julian

> On Aug 12, 2013 10:43 AM, "Julian Foad" <julianfoad_at_btopenworld.com> wrote:
>> TLDR: Ev2 move support doesn't work with the "move" and "rotate"
>> instructions as currently defined, and I propose that it could work
>> instead with separate "move-away" and "move-here" instructions.

Received on 2013-08-14 10:08:10 CEST

This is an archived mail posted to the Subversion Dev mailing list.