I’m very new to Ruby, I generally work in Python. I am wanting to try writing a simple little chat server in it. The problem is, I’m trying to find something in ruby similar to the select() function in C/Python that returns a list of readable/writeable/error sockets, but I can’t seem to find one.
Am I being completely dense and missing something obvious? I’ll be the first to admit I’m not a very good programmer, so thats entirely possible. I would appreciate it if someone could point me to a reference to it, or even a complete chat server program.
I'm very new to Ruby, I generally work in Python. I am wanting to try =
writing a simple little chat server in it. The problem is, I'm trying to =
find something in ruby similar to the select() function in C/Python that =
returns a list of readable/writeable/error sockets, but I can't seem to =
find one.
Kernel::select
pigeon% ri Kernel::select
--------------------------------------------------------- Kernel::select
select( readArray [, writeArray [errorArray [timeout]]] ) ->
anArray or nil
···
------------------------------------------------------------------------
Performs a low-level select call, which waits for data to become
available from input/output devices. The first three parameters are
arrays of IO objects or nil. The last is a timeout in seconds,
which should be an Integer or a Float. The call waits for data to
become available for any of the IO objects in readArray, for
buffers to have cleared sufficiently to enable writing to any of
the devices in writeArray, or for an error to occur on the devices
in errorArray. If one or more of these conditions are met, the call
returns a three-element array containing arrays of the IO objects
that were ready. Otherwise, if there is no change in status for
timeout seconds, the call returns nil. If all parameters are nil,
the current thread sleeps forever.
select( [$stdin], nil, nil, 1.5 ) #=> [[#<IO:0x4019202c>], , ]
I’m very new to Ruby, I generally work in Python. I am wanting to try
=
writing a simple little chat server in it. The problem is, I’m trying
to =
find something in ruby similar to the select() function in C/Python
that =
returns a list of readable/writeable/error sockets, but I can’t seem
to =
find one.
Kernel::select
pigeon% ri Kernel::select
--------------------------------------------------------- Kernel::select
select( readArray [, writeArray [errorArray [timeout]]] ) →
anArray or nil
Performs a low-level select call, which waits for data to become
available from input/output devices. The first three parameters are
arrays of IO objects or nil. The last is a timeout in seconds,
which should be an Integer or a Float. The call waits for data to
become available for any of the IO objects in readArray, for
buffers to have cleared sufficiently to enable writing to any of
the devices in writeArray, or for an error to occur on the devices
in errorArray. If one or more of these conditions are met, the call
returns a three-element array containing arrays of the IO objects
that were ready. Otherwise, if there is no change in status for
timeout seconds, the call returns nil. If all parameters are nil,
the current thread sleeps forever.
select( [$stdin], nil, nil, 1.5 ) #=> [[#<IO:0x4019202c>], [],
I’m very new to Ruby, I generally work in Python. I am wanting to try
writing a simple little chat server in it. The problem is, I’m trying to
find something in ruby similar to the select() function in C/Python that
returns a list of readable/writeable/error sockets, but I can’t seem to
find one.
(For a non-threaded example, I posted http://www.ruby-talk.com/59000 -
but please ignore my comments about threading and sockets being
problematic; I was mistaken!)