Mailing List Archive: 49091 messages
  • Home
  • Script library
  • AltME Archive
  • Mailing list
  • Articles Index
  • Site search

[REBOL] Re: [object] [VID] Some other questions

From: AJMartin::orcon::net::nz at: 24-Dec-2003 22:49

> 5) On the webpage about objects one passage mentioned that "sub-objects"
don't get cloned- what does that mean? Reading that I would expect that all objects within an object aren't available when I create an object on the basis of that object. But I seem to be able to use it anyway. Maybe I am getting something wrong here ?
>> Outer: make object! [
[ m: 123 [ Inner: make object! [ [ m: 456 [ ] [ ]
>> Outer/Inner/m
== 456
>> Another: make Outer [
[ m: "Another!" [ ]
>> Another/m
== "Another!"
>> Another/Inner/m
== 456
>> Another/Inner/m: "Another's Inner!"
== "Another's Inner!"
>> Outer/Inner/m
== "Another's Inner!" Can you see that there's only one object inside the objects refered to by 'Outer and 'Another? It's like copying pointers in C, with out copying the C string.
> 7) Trying to find a solution to the problem above I looked around the
REBOL webpages and searched for a possibility to create threads - there doesn't seem to be anything like that - how is "parallel processing" achieved in REBOL ? Cooperative multi-tasking. There is only the one thread in Rebol.
> I read it would be possible to create images on the fly and work with
these then - is it possible to store an entire (view) layout within such an image ? Yes. There's an example or two of this on the Rebol site.
> 13) I didn't see any designated function to set pixels at certain
coordinates in a layout- my workaround was using the line word - with 1 width/height. How is this really done ? There is a pixel dialect for Rebol; but it seems to be concealed to casual visitors. :-/ I'm sure that some one with more VID experience will be able to answer more of these questions. Andrew J Martin Speaking in tongues and performing miracles. ICQ: 26227169