On Mar 30, 2011, at 2:51 PM, Tristan Seligmann wrote:
> On Wed, Mar 30, 2011 at 7:20 PM, Glyph Lefkowitz
> 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
On Wed, Mar 30, 2011 at 7:20 PM, Glyph Lefkowitz
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
On Mar 30, 2011, at 11:09 AM, Christopher Armstrong wrote:
> Funny, that's what I got on my proprietary application (0.0597) :-) It's a
> heavily inlineCallbacks-based codebase, and I expect there would be a much
> larger number of addCallback/addErrback calls if it weren't. Also, looking at
>
On Wed, Mar 30, 2011 at 4:50 PM, Jasper St. Pierre
wrote:
> The problem that I have is that errback flow is awkward... the main
> difference is that addCallbacks will call the errback if its own callback
> fails, right? I can only see that really being useful by accident.
>
Not really.
# 1. Hand
The problem that I have is that errback flow is awkward... the main
difference is that addCallbacks will call the errback if its own callback
fails, right? I can only see that really being useful by accident.
On Wed, Mar 30, 2011 at 11:09 AM, Christopher Armstrong <
ra...@twistedmatrix.com> wrote:
On Wed, Mar 30, 2011 at 2:55 AM, Tristan Seligmann
wrote:
> On Tue, Mar 29, 2011 at 5:08 PM, Christopher Armstrong
> wrote:
> > I probably use addCallbacks once for every 30-100 addCallback or
> addErrback
> > calls I do (counted by lines of code, not times they're executed). But
> > that's just
On Tue, Mar 29, 2011 at 5:08 PM, Christopher Armstrong
wrote:
> I probably use addCallbacks once for every 30-100 addCallback or addErrback
> calls I do (counted by lines of code, not times they're executed). But
> that's just an off-the-cuff estimate.
For interest's sake, I just ran the numbers
On Tue, Mar 29, 2011 at 7:56 AM, Peter Hogg wrote:
> I haven't been following the thread, but just wanted to mention
> something that caught me out when I was learning to use deferreds.
>
> Both the old deferred documentation and your fix-up fail to mention
> addCallbacks() until near the end, wh
Good catch, I really should mention that...
On Tue, Mar 29, 2011 at 8:56 AM, Peter Hogg wrote:
> I haven't been following the thread, but just wanted to mention
> something that caught me out when I was learning to use deferreds.
>
> Both the old deferred documentation and your fix-up fail to me
I haven't been following the thread, but just wanted to mention
something that caught me out when I was learning to use deferreds.
Both the old deferred documentation and your fix-up fail to mention
addCallbacks() until near the end, when in practice I find
addCallbacks() to be much more useful
I'm really tired... the 'demo server' program is at
http://p.mecheye.net/deferred-server.py/0
I coded it up in like 10 minutes. Definition of quality right there, yo.
Hopefully no more noise tonight.
On Mon, Mar 28, 2011 at 9:14 PM, Jasper St. Pierre wrote:
> I'm tired. Link dump:
>
>
> http:/
I'm tired. Link dump:
http://magcius.mecheye.net/twisted/DeferHowTo-Fixup.html
http://magcius.mecheye.net/twisted/DeferHowTo-Fixup.lore
oldies are at
http://magcius.mecheye.net/twisted/DeferHowTo-Fixup-v1.html
http://magcius.mecheye.net/twisted/DeferHowTo-Fixup-v1.lore
comments, etc.
__
OK, I'm already making a lot of these changes, I should have a new version
Up Soon (TM).
> Placeholders.
>
> Placeholders for what, though?
>
Placeholders for that magic lib, that I think I'm going to stop looking for
and say, "demonstration purposes only"
How do they use it? Why is it relevant
On Mar 25, 2011, at 7:28 AM, Jasper St. Pierre wrote:
> Big wall of text incoming. If you're going to read any part of this
> email, search for *IMPORTANT* and read that part.
>
> Right now I'm stuck at creating a simple example for "deferred dependencies".
>
> On Tue, Mar 22, 2011 at 10:03 PM,
Big wall of text incoming. If you're going to read any part of this
email, search for *IMPORTANT* and read that part.
Right now I'm stuck at creating a simple example for "deferred dependencies".
On Tue, Mar 22, 2011 at 10:03 PM, Glyph Lefkowitz
wrote:
> On Mar 21, 2011, at 9:30 PM, Jasper St. P
What about Mattel?
http://itre.cis.upenn.edu/~myl/languagelog/archives/002892.html
On Wed, Mar 23, 2011 at 1:07 PM, Glyph Lefkowitz
wrote:
>
> On Mar 23, 2011, at 9:24 AM, Kevin Horn wrote:
>
>
> On Tue, Mar 22, 2011 at 9:03 PM, Glyph Lefkowitz
> wrote:
>>
>> Why is Twisted's right hand blue?
On Mar 23, 2011, at 9:24 AM, Kevin Horn wrote:
>
>
> On Tue, Mar 22, 2011 at 9:03 PM, Glyph Lefkowitz
> wrote:
> Why is Twisted's right hand blue? (Forget about being a beginner: I honestly
> don't even get this reference. Googling seems to suggest it has something to
> do with symptoms o
Hi!
On Mon, Mar 21, 2011 at 09:30:54PM -0400, Jasper St. Pierre wrote:
> http://magcius.mecheye.net/twisted/DeferHowTo-Rewrite.html
> http://magcius.mecheye.net/twisted/DeferHowTo-Fixup.html
This looks quite good. You might want to check if the code examples
actually work, though: The "hands-on t
On Tue, Mar 22, 2011 at 9:03 PM, Glyph Lefkowitz wrote:
>
>- Why is Twisted's right hand blue? (Forget about being a beginner: I
>honestly don't even get this reference. Googling seems to suggest it has
>something to do with symptoms of heart disease and doesn't seem funny or
>re
On Mar 21, 2011, at 9:30 PM, Jasper St. Pierre wrote:
> On IRC, exarkun, glyph, spiv and idnar encouraged me to do a bit of
> work on the Defer documentation.
Yay! This documentation could definitely use some work.
> I kept get confused between the things like returning a Deferred from a
> cal
On Mon, 2011-03-21 at 21:30 -0400, Jasper St. Pierre wrote:
> The former is a tutorial that I tried to make informal as possible,
> and the latter is a fixup and rewrite of defer.xhtml stuff to make it
> a bit less, uh, dense.
I like the fixup, it's a good start, especially explaining the
motivat
(I screwed up my mailman preferences accidentally, so this is
formatted a bit haphazard from copy/paste)
> Thank you for tackling the impossible.
Thank you for the encouragement. I'm curious if you read both
documents, and if you had a preference toward one or the other. I
hopefully only want to
On 3/22/11 2:30 AM, Jasper St. Pierre wrote:
> On IRC, exarkun, glyph, spiv and idnar encouraged me to do a bit of
> work on the Defer documentation. I kept get confused between the
> things like returning a Deferred from a callback and chainDeferred,
> which I found out wasn't that useful:
>
> I
On IRC, exarkun, glyph, spiv and idnar encouraged me to do a bit of
work on the Defer documentation. I kept get confused between the
things like returning a Deferred from a callback and chainDeferred,
which I found out wasn't that useful:
I suppose it's useful for "forking" a deferred
you have a
On Mon, Aug 3, 2009 at 6:00 PM, Edward Z. Yang wrote:
> I have updated my draft here:
>
>http://ezyang.com/twisted/defer2.html
>
Thanks. Looks like it's improving. I've got more points to critique now,
but that's only because there's more meat to the tutorial now :).
1. The coding stan
Thanks! I've updated the docs accordingly.
Cheers,
Edward
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In the Callbacks and errbacks section:
"Notice that in the synchronous version, process is inside the
try..except block. This translates over to the asynchronous code: if
process throws an exception, handle_twisted will get a Failure
object..." : I think you may mean "handle_twisted_error", not
"ha
Andrew Francis wrote:
> Simple definition: In a synchronous call, the caller blocks until a result is
> ready. Upon return the next statement is executed (barring something like an
> exception). In an asynchronous call, the caller does not wait for a result
> and continues.
Just a thought on te
Hi Edward:
Message: 2
Date: Mon, 03 Aug 2009 18:00:07 -0400
From: "Edward Z. Yang"
Subject: Re: [Twisted-Python] Deferred documentation rewrite
To: Twisted general discussion
Message-ID: <1249336297-sup-7...@javelin>
Content-Type: text/plain; charset=UTF-8
>Why callbacks
- Original Message -
From: "Edward Z. Yang"
To: "Twisted general discussion"
Sent: Monday, August 03, 2009 6:00 PM
Subject: Re: [Twisted-Python] Deferred documentation rewrite
I like the side-by-side regular and twisted versions, that's helpful
I have updated my draft here:
http://ezyang.com/twisted/defer2.html
The most notable change is I've removed the section "From Synchronous to
Asynchronous". I believe (and I think other people agree with me) that
this is an important topic to cover, but it's really *hard* to teach
asynchronou
On Fri, Jul 31, 2009 at 6:40 PM, Edward Z. Yang wrote:
> You can view an initial draft of the rewrite here:
This is a great first draft! Very substantial. I really appreciate you
working on this.
Now I will proceed to rip it to shreds by way of giving you some feedback,
but please try to tak
On Fri, 2009-07-31 at 18:40 -0400, Edward Z. Yang wrote:
> You can view an initial draft of the rewrite here:
>
> http://ezyang.com/twisted/defer2.html
>
> For reference, this is the planned outline (X means done, ? means
> almost done):
>
> X Synchronous to Asynchronous: The Method to the Madne
You can view an initial draft of the rewrite here:
http://ezyang.com/twisted/defer2.html
For reference, this is the planned outline (X means done, ? means
almost done):
X Synchronous to Asynchronous: The Method to the Madness
X Convert synchronous code to asynchronous code
X Why asynchro
On Fri, Jul 31, 2009 at 9:07 AM, Terry Jones wrote:
> > "Michael" == Michael Hudson writes:
> Michael> The accompanying paper is here:
> http://mumak.net/stuff/twisted-intro.html
>
> I agree, that's a really nicely done document. It would be good to extend
> it, moving into a description an
> "Michael" == Michael Hudson writes:
Michael> The accompanying paper is here:
http://mumak.net/stuff/twisted-intro.html
I agree, that's a really nicely done document. It would be good to extend
it, moving into a description and explanation of deferreds.
Terry
- Original Message -
From: "Michael Hudson"
To: "Twisted general discussion"
The accompanying paper is here: http://mumak.net/stuff/twisted-intro.html
Thanks for this incredibly helpful link!
-Dave
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Am 30.07.2009, 23:45 Uhr, schrieb Kevin Horn :
> Thanks for this, Terry. I'd never thought of it that way, and it's
> quite a
> good point.
I agree. I've come to think it's partially a fault of using normal text
based editors. Those fit the programming models from 30 years ago well,
but to
2009/7/31 ezyang :
> Excerpts from Jamu Kakar's message of Thu Jul 30 15:03:16 -0400 2009:
>> Jono Lange gave a presentation recently (can't remember what it was
>> called... maybe something about being an evil hacker or about how
>> your code sucks and he hates you) where he presented step-by-step
On Thu, Jul 30, 2009 at 4:27 PM, Terry Jones wrote:
> > Right. Everything you could do synchronously, you can do asynchronously
> > (and a bit more too). It just /looks/ really weird.
>
> At some point I realized that it helps to realize that code that looks
> synchronous really isn't at all. P
> Right. Everything you could do synchronously, you can do asynchronously
> (and a bit more too). It just /looks/ really weird.
At some point I realized that it helps to realize that code that looks
synchronous really isn't at all. Probably all the programming that almost
all of us will ever do
Excerpts from Jamu Kakar's message of Thu Jul 30 15:03:16 -0400 2009:
> Your outline looks nice. Something that *really* helped me a lot
> with Deferreds was seeing how they are modelled after standard
> Python flow control behaviour. I guess that's what the first
> section your proposing is abou
This looks really great...looking forward to the results!
Kevin Horn
On Thu, Jul 30, 2009 at 2:03 PM, Jamu Kakar wrote:
> Hi Edward,
>
> On Thu, Jul 30, 2009 at 11:24 AM, Edward Z. Yang wrote:
> > I have been prodded by the members of #twisted into rewriting the
> > Deferred documentation. You
Hi Edward,
On Thu, Jul 30, 2009 at 11:24 AM, Edward Z. Yang wrote:
> I have been prodded by the members of #twisted into rewriting the
> Deferred documentation. You can check out the plan at this
> ticket:
>
> http://twistedmatrix.com/trac/ticket/3943
>
> Comments would be appreciated.
Your outl
Hello all,
I have been prodded by the members of #twisted into rewriting the
Deferred documentation. You can check out the plan at this
ticket:
http://twistedmatrix.com/trac/ticket/3943
Comments would be appreciated.
Cheers,
Edward
P.S. If you reply on the mailing list, please CC me.
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