ZeroMQ::Raw - Low-level API for ZeroMQ
Calls zmq_poll on the given items as specified by @list_of_hashrefs. Each element in @list_of_hashrefs should be a hashref containing the following keys:
Contains the ZeroMQ::Raw::Socket object to poll.
Contains the file descriptor to poll. Either one of socket or fd must be specified. If both are specified, 'socket' will take precedence.
A bitmask of ZMQ_POLLIN, ZMQ_POLLOUT, ZMQ_POLLERR
Callback that gets invoked. Takes no arguments.