March 30, 2011
6:51 p.m.
On Wed, Mar 30, 2011 at 7:20 PM, Glyph Lefkowitz <glyph@twistedmatrix.com> wrote:
However, in my experience, a novice's understanding of addCallbacks() is critically important to understanding other uses of Deferred as well; in particular, the "one chain of pairs of callback and errback" concept makes a lot of the behavior clear which might not otherwise be. If you just vaguely know about chains of callbacks, you can easily get confused.
Anecdotally, I didn't understand Deferred callback chains at all correctly until I discovered that addCallback and addErrback were implemented in terms of addCallbacks, and how they were implemented. -- mithrandi, i Ainil en-Balandor, a faer Ambar