Deconstructing Deferred

This is a great thread about Twisted’s Deferred object, used to manage callbacks.

https://groups.google.com/forum/#!topic/python-tulip/ut4vTG-08k8/discussion

Patterns for clear and yet robust async programming are very important. This was a great write-up by Guido van Rossum explaining Deferred, and inferring its design decisions.

The actual Deferred documentation is here: http://twistedmatrix.com/documents/12.3.0/core/howto/defer.html

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