cppzmq docs for poll are wrong about zguide HOT 3 OPEN

Hi @TobiSchluter, thanks for reporting the bug. It would be great if you could fix the example and send a PR :)

from zguide.

Well, I'm no longer sure what the intended way to do this is given this comment in zmq.hpp:

// note: non-const operator bool can be removed once
// operator void* is removed from socket_t
ZMQ_EXPLICIT operator bool() ZMQ_NOTHROW { return _handle != ZMQ_NULLPTR; }

It certainly seems to suggest that operator void * is not the proper interface to use.

But sure, PR coming. It's always easier for people "in the know" to step up when there's an actual change :)

from zguide.

Shouldn't this be closed?

from zguide.