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On Wed, Aug 04, 2010 at 07:50:01PM +0100, Ewan Mellor wrote: >>> I feel like Nova is greatly complicated by the async code, and I'm >>> starting to see some of the pain of Twisted: it seems that >>> _everything_ needs to be async in the long run, because if something >>> calls a function that is (or could be) async, it must itself be >>> async. So yields and @defer.inlineCallbacks start cropping up >>> everywhere. >> Just to be clear: defer.inlineCallbacks (and thus yields) are by no >> means required to deal with deferreds. Before Nova, I had never used >> it. > All this aside, could you write a few simple examples of how we're > supposed to use deferreds, inlineCallbacks, yields etc for now? I > thought that I was copying the idioms in use elsewhere, but I've ended > up with code that is definitely blocking, even though I thought that > it wouldn't be. I'd be happy to. I've been out with a pretty hefty fever and I'm still not anywhere near at a 100%, but I'll write something clever up first thing Monday. -- Soren Hansen Ubuntu Developer http://www.ubuntu.com/
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