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The explanation is cute, but fairly non-obvious (from Evolution of a POE Server, on the POE site):

The POE based server we just completed is still a bunch of work. What's worse, most of the work never changes from one server to the next. Listening to a server socket and accepting connections from it is a well-established science. Likewise, performing buffered operations on non-blocking sockets is largely the same everywhere. Reinventing these wheels for every server gets old very fast.

We created a group of classes under the POE::Wheel namespace to encapsulate these standard algorithms. Each Wheel contains some initialization code to set up event generators, and each implements the handlers for those events.
--
Mike


In reply to Re: Re: An introduction to POE by RMGir
in thread An introduction to POE by RMGir

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    [ambrus]: So that, or if you really want something agnostic to the loop, then use curl multi. Its interface is quite reasonable (unless you use an old version),
    [ambrus]: though it's very C-like (serious use of varargs so easy to pass the wrong type), and there are some minor problems (busy loop because it doesn't use the same timer as your event loop, so you have to artificially delay timer callbacks by a small amount).

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