Escape from Callback Hell: Callbacks are the modern goto

Re:Escape from Callback Hell: Callbacks are the modern goto by pjscott on Saturday November 03, 2012 @12:56AM (#4735940)

That looks like an unnecessarily confusing way of writing this code:

    try:
        data = doManyFancyThingsWith(asyncResult())
        print 'Parsed data:', data
    except:
        print 'Oh no, something went wrong!'

That's the code I would write if I were using Eventlet or Gevent, and it would work just fine. Why settle for less? It's 2012, damn it; we shouldn't have to dick around with deferreds except under exotic circumstances.

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Re:Escape from Callback Hell: Callbacks are the modern goto by zenbot on Saturday November 03, 2012 @10:11AM (#4736631)

This is possible in Twisted, using inline callbacks:

  try:
      data = doManyFancyThingsWith(yield asyncResult())
      print 'Parsed data:', data
  except:
      print 'Oh no, something went wrong!'

I find that I use inline callbacks for the common case and work with deferreds directly only when it makes more sense to handle callbacks explicitly.

[ Parent | on HN ]