AltME: Rebol School

Messages

Josh: 02:23Yea, I meant that my attempt was in Rebol2 ;) Rebol3 took me half a minute
Ladislav: 09:37See
http://stackoverflow.com/questions/18754383/shouldnt-bound-global-variable-return-the-system-words-context/18756884#18756884
for the answer
Endo: 11:15Doesn't this an important bug in Rebol 2?
o: make object! [a: none]
same? o bound? in o 'a ;==false
Ladislav: 11:40Well, it is rather unexpected, but, as noted, this works:
o: make object! [a: b: none]
same? bound? in o 'a bound? in o 'b

11:42It is a quirk rather than a bug.

11:44But, certainly, it may be annoying and it is good that Rebol 3 works better.
Endo: 11:49I see, thanks for the explanations.
Josh: 18:19Thank you Ladislav.

Endo: 14:13Why there are (error) in trace:
>> f: does [if true [exit]]
>> trace on
>> f
Trace:  f (word)
Trace:  if (word)
Trace:  true (word)
Trace:  [exit] (block)
Trace:  exit (word)
Result: (error)   ;<---
Result: (error)   ;<---
Result: (unset)

Gabriele: 08:20I think that's an implementation detail. EXIT and RETURN are implemented in the exact same way as THROW or causing an error.
You can imagine EXIT as causing a special error. The function catches that special error. If no function catches it, it then gets to you as
>> exit
** Throw Error: Return or exit not in function
** Near: exit
Endo: 10:17Thanks for the reply.
Maxim: 11:30Marco, actually, its very easy to build extensions in C for R3.
In fact, in many cases, its easier to build an extension in C for R3 than trying to wrap one in R2. simply because many of the dll types do not match R2 at all. also many of the systems now have 64 bit types which is very awkward to manage in R2.
if you use the starter project that Carl had done, showing how to manipulate Rebol series you should be able to make stubs for any dll.

SWhite: 14:39Some of us are slow, but we do get there eventually (wherever "there" is). I was re-reading the short essay by Carl on the REBOL web site about "REBOL overview for Scientists, Engineers, Professors, Programmers." Had a couple "aha!" moments. When I got to the end, I saw the comment, "Coming up next...storage, context, interpretation." It looks like that follow-up essay is one of those things that never got done. It would be nice to see it. If anyone has access to Carl, you might mention it to see if he ever wants to visit that topic again. I suppose that as time passes he becomes more detached from REBOL.

Tomc: 08:32Ha ! it is kinda fiun to be a newbie again.
I'm porting a r2 script to r3 and find all my hyphenated  (script) argument flags are missing
that is I get the word after the hyphenated flag but not the flag itself in system/script/args

i.e. with
> script.reb  -i this.file  -o that.file
I end up with  args being [ this.file that.file]  with no flags
is this expected behavior these days or something I have mangled myself?
this is on 64b linux  built a month or two ago
Tomc: 10:20think I got it
> script.reb --args "-i this.file -o that.file"

Marco: 19:51Is there a shorter, more generic way of doing this:
bl: ["a" "b" "c"]
ob: context [x: y: z: none]
ob/x: bl/1
ob/y: bl/2
ob/z: bl/3
on R3 ?
Gregg: 20:21set ob bl