[REBOL] Re: CORE experimental 2.4.39
From: holger:rebol at: 23-Nov-2000 6:41
On Thu, Nov 23, 2000 at 07:18:00AM +0100, Petr Krenzelok wrote:
> > Added GET-MODES and SET-MODES for file and network ports. (These
> > functions are NOT documented at this time and are subject to change in
> > later versions. Use at own risk.)
> >
>
> Does it mean they could be removed later? Or do you mean just change of
> their behavior?
The API might still change. The functionality will remain though.
> What are these functions good for, please? :-) I tried
> 'get-on upon my mailbox port, but it does seem to want different kind of
> parameter .... I was not succesfull even with file port:
You can change port modes (binary vs string etc.), platform-specific
file properties such as permission bits or dates, and for sockets
things like type-of-service, lists of multicast groups etc. -- and a
lot more.
More info on calling conventions and supported modes once we have
made a final decision regarding the API.
> > Added fork selection to the /custom block for OPEN, READ etc.
>
> And - what does this one mean? :-)
open/custom %abc [fork "data"]
opens the data fork of a file,
open/custom %abc [fork "resource"]
opens the resource fork. At the moment this is just a "Mac thing".
> > Added NOW/precise refinement.
> >
>
> nice ...
Accuracy depends on the platform: Mac: one second (unfortunately),
Windows: one millisecond, all other platforms: one microsecond.
> > Added asynchronous 'wait-able DNS for Unix and Windows:
> > open dns:///async, then insert/wait/copy.
>
> is the number of slashes correct?
Yes. The first two slashes are optionally used to separate the
scheme from the hostname for "normal" DNS requests (e.g.
dns://hostname
), scheme-specific things such as DNS options
follow the third slash. Use for example
a: open/no-wait dns:///async
insert a "www.rebol.com"
wait a
copy a
close a
The same port can be used for multiple consecutive DNS lookups.
Just alternate between insert and copy. You cannot queue multiple
requests in the same port though.
> There seem to be always something to improve :-) Now when above changes
> will find it's way into REBOL/View? :-)
With the next release, probably.
--
Holger Kruse
[holger--rebol--com]
