[REBOL] A couple of things regarding ports Re:(3)
From: al:bri:xtra at: 18-Sep-2000 21:00
malte wrote:
> Im also making a multi-connection app, and had the same problems, however,
I don't get things to work with dispatch either..
> perhaps Im not using it properly.. syntax, anyone? :)
>
> right now I go like
> port: dispatch [port1 port2]
>
> wrong?
Yes. That's wrong. Have a look at the source for 'dispatch:
>> source dispatch
dispatch: func [
{Wait for a block of ports. As events happen, dispatch port handler
blocks.}
port-block [block!] {Block of port handler pairs (port can be timeout
too).}
/local ports awake timeblk result
][
ports: copy []
foreach [port job] port-block: reduce port-block [
if any [number? port time? port] [if none? timeblk [timeblk: :job]]
append ports port
]
forever [
either awake: wait/all ports [
if foreach item awake [
set/any 'result do select port-block item item
if all [value? 'result 'break = :result] [break/return true]
] [break]
] [do :timeblk]
]
]
Note the 'foreach:
foreach [port job] port-block
There's a job after each port value. Try:
dispatch [port1 Port1Handler port2 Port2Handler]
and have:
Port1Handler: func [...
etc.
I hope that helps!
Andrew Martin
ICQ: 26227169
http://members.ncbi.com/AndrewMartin/
http://members.xoom.com/AndrewMartin/
