> Has use of the "nl" file mode been documented anywhere (besides in the
> source code)?
Art,
The "nl" mode is bleeding-edge new, it is in CVS and has seen preliminary
testing. I plan to add a description of it to Chapter 5 of the Unicon book
as soon as I can. In the meantime, I can offer the following:
f := open(":"||port, "nl")
returns immediately, instead of blocking as mode "na" does.
f is not open for reading or writing yet, it is just listening.
If f is passed into a select():
L := select([f])
then a connection request on f's port will cause f to turn into a
regular network connection (open for reading and writing, per "na")
and f will be in the list L that is returned from select().
This allows select() to handle input on existing connections while
also listening for new connections.
Clint
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