| srichter | but he will know | 00:00 |
|---|---|---|
| srichter | it would not have been what I expected, but it is probably documented somewhere | 00:00 |
| FarcePest | he refered me to http://www.zope.org/Wikis/ZODB/FrontPage/guide/node6.html | 00:00 |
| FarcePest | 5.3.2 | 00:03 |
| srichter | yep | 00:04 |
| srichter | ah of course, that makes sense | 00:04 |
| srichter | because you mutate the tree while iterating | 00:05 |
| srichter | since the entire point of iterators is to be lazy, the outcome is unporedictable | 00:05 |
| FarcePest | i figured that was going on, but it seemed bug-like that it would affect keys(), which is counter to would happen with normal dict | 00:05 |
| FarcePest | tim: "It's true that BTree.keys() does not create a distinct list, but | 00:06 |
| FarcePest | that's documented, important, and won't change. BTree.keys() acts a | 00:06 |
| FarcePest | lot more like dictionary.iterkeys()." | 00:06 |
| srichter | right, since it creates an iterator | 00:11 |
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| FarcePest | perhaps behaviorally, keys() should be implemented as return list(self.iterkeys()) | 00:12 |
| FarcePest | that seems more pythonic to me. if you are worried about the index being huge, you'll use iterkeys() anyway | 00:12 |
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| FarcePest | however, lazy keys() might be too firmly entrenched, since there's a bunch of stuff that predates iterators | 00:14 |
| FarcePest | unfortunately, BTreeContainer doesn't have iterkeys() | 00:17 |
| srichter | did you ask Tim for the rational of this design decision? | 00:30 |
| srichter | ok, time to go home | 00:31 |
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| tarek | Hi, is there anything comparable to z2's "beforeCommitHook" in Zope 3 ? | 17:48 |
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| srichter | tarek: let me check | 17:54 |
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| tarek | srichter, ok thanks | 18:00 |
| FarcePest | srichter, re BTreeContainer.keys(), no, I did not ask Tim for the rationale for the design decision | 18:02 |
| srichter | tarek: we have an EndRequestEvent | 18:02 |
| tarek | great, thank you :) | 18:02 |
| srichter | tarek: nothing should happen after that, so this should be as close as you need to be | 18:03 |
| tarek | ok, i am looking at it | 18:03 |
| srichter | tarek: see zope.app.publication.zopepublication | 18:03 |
| tarek | ok thx | 18:03 |
| srichter | FarcePest: ok, maybe we should :-) | 18:03 |
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| FarcePest | yeah, i'm partial to making the current .keys() implementation .iterkeys(), and making .keys() return list(self.iterkeys()) | 18:08 |
| FarcePest | or at the very least, adding .iterkeys(), and warning people that .keys() will return a list at some point in the future | 18:09 |
| srichter | FarcePest: It will be an uphill battle, but you can always try :-) | 18:11 |
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| FarcePest | does zope3 use the python built-in datetime objects now? | 19:39 |
| mgedmin | yes | 19:40 |
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| mgedmin | if I have a ZODB Connection, can I iterate over all Persisten objects? | 19:55 |
| mgedmin | (I need to write a generation evolve script and change an object that is stored as an annotation) | 19:56 |
| mgedmin | (findObjectsProviding only returns those objects that are reachable from the root by calling 'values()' on various mappings) | 19:56 |
| mgedmin | (you won't get objects stored in annotations from findObjectsProviding) | 19:56 |
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| * srichter just got into a piss match with some Twisted guys. Oy | 19:58 | |
| srichter | mgedmin: no | 20:00 |
| mgedmin | :( | 20:00 |
| srichter | mgedmin: I know | 20:00 |
| srichter | Jim wants something like that in ZODB for this reason | 20:00 |
| SteveA_ | so, oids are longs... | 20:01 |
| mgedmin | I suppose you can do some tricks with pickling, like locationCopy does | 20:01 |
| SteveA_ | you just need to start at 1 | 20:01 |
| mexiKON | heh | 20:01 |
| SteveA_ | there's an API for migrating a storage | 20:02 |
| SteveA_ | which it an iterator that goes through all objects | 20:02 |
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| ignas | ?? | 20:16 |
| ignas | "which it an iterator" ? | 20:16 |
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| tvon | Is there a way to check weather an object properly implements an interface? | 22:05 |
| tvon | eg, check that everything defined in the interface is in the object | 22:05 |
| vinsci | tvon, yes, by using Java :) | 22:07 |
| tvon | heh | 22:07 |
| vinsci | one of the reasons I prefer java for some tasks... | 22:07 |
| tvon | I could do it in a few lines but I thought there might be something in zope I wasn't finding | 22:08 |
| vinsci | I hope there is something, as otherwise updated to implementing classes will be partial sometimes (due to humar error) | 22:10 |
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| tvon | vinsci: zope.interface.verify.verifyObject seems to do it | 22:21 |
| tvon | now take back the mean things you said about using java :) | 22:22 |
| vinsci | nah, not until Python does it automatically | 22:22 |
| tvon | heh | 22:23 |
| tvon | that would be nice | 22:23 |
| vinsci | above all, it would be _reliable_ | 22:23 |
| * vinsci is a fan of reliability | 22:23 | |
| srichter | it would suck if Python does it automatically | 22:25 |
| srichter | oftentimes we purposfully do not implment the entire interface | 22:25 |
| srichter | testing is a big example here; we are able to make stub implmentations, where we implement only as much of an interface as we need | 22:26 |
| * bradb wonders how verifyObject ended up with such a bizarre name | 22:27 | |
| srichter | verify an object's implementation of an interface | 22:28 |
| srichter | you always have to see it in the context of its module: zope.interface.verify | 22:28 |
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| tvon | I understand that reasoning, though the death of stubs would not bother me much | 22:44 |
| tvon | the biggest problem I have with writing tests is finding out that a stub somewhere up the line doesn't have something that it should | 22:46 |
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| srichter | with twsited's async loop in place, it will be very easy to write cron-like services | 23:52 |
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| FarcePest | so who won that pissing contest you mentioned earlier? | 23:55 |
| srichter | well, there was no winner as I had to leave | 23:56 |
| srichter | but I hate it if people behave like their technology is the answer to the universe | 23:56 |
| FarcePest | don't they know it's OUR technology? duh | 23:57 |
| srichter | well, I think the people that were snappy were simple users of Twisted which are not envolved a lot | 23:57 |
| srichter | dash was actually very nice and tried to listen to my complaint | 23:58 |
| FarcePest | is that "involved" or "evolved"? | 23:58 |
| srichter | involved | 23:59 |
| srichter | sorry | 23:59 |
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