World: r3wp

So far FUNCTOR hasn't really been used, so now is the time to change 
it if we are going to do so. The variable capture is a must though, 
since it will be used where the spec can't be specified by the user.

Oh, now I see what you meant about handlers.

yes, that can be used, but I suggest the uninitialized variables 
to be captured as dynamic, while the initialized be captured as static

does that make sense?

(I mean for your planned use)

In general R3 is moving towards specifying handlers as code blocks 
passed to FUNCT or FUNCTOR with standard specs specified internally. 
This is their reason for existence.

BBL, have a meeting :)

So how would a user, when specifying a handler, which becomes the 
functor body, specify that a given variable is to be static, and 
that another variable is to be dynamic?

If FUNCTOR scans the given body block and treats all variables the 
same, then that control is lost by the user. Are we happy to lose 
that control?

Maybe FUNCTOR should have the initialization block like Ladislav 
suggests, and a more specific "handler-func" function be created 
for the specific handler use Brian is talking about?

if you are asking me, then the static variables may be captured from 
the INIT block, all other from the body, but it looks, that BrianH 
intended to have all variables static in a Functor, except for the 
variables from the SPEC block

Why couldn't the init block be inside the body block, in first position?

(.... maybe not such a good idea..)

yes, then it might be better to use the same approach as the MAKE 
funtion in R3 seems to use

I need to sleep on that...

Ladislav, great to see you back!!!  Now, tell us where have you been 
and why gone so long?

One thing to remember is that these function-building functions will 
be called a lot, so fast-and-simple is better than complex.

Ladislav, strangely enough there are also persistent words defined 
for the words in the spec, if they are set with set-words in the 
body. You can access them through self. It's just that the spec takes 
binding priority, so direct access to the words in the spec will 
be bound to the spec. There are many potential advantages to this, 
but the main reason this was done was speed.

FUNCT works well, but is too slow and has too much overhead. We already 
had to make one error go away to remove the screen for spec words 
overhead (see bug#717), but it still has the overhead of a temporary 
object which we haven't removed yet (see bug#544).


If you had FUNCTOR work the way you say, you would have to somehow 
distinguish words in the persistant object (as specified with init) 
from words that should be made into locals, which would add back 
the same overhead that the change referred to in bug#717 got rid 
of, as REBOL code. This would make FUNCTOR have much less performance 
than the equivalent code: CONTEXT [var1: 'blah ... SET 'func1 FUNC 
[...] [...]]

In general we are trying to deal with the problem in R2 where many 
functions were optimized away in high-performance code, so they end 
up being a waste of space. Many former mezzanines are now native, 
and many others are changed to make their overall usage more efficient. 
It's a balance.

Currently,  i have a crash  when i start the chat with r3-a48 under 
Vista.
Obviously, i can't see what is the bug, 

And when i try with the previous version i got  (a42)
i got this error: 
--- Note: checking for new messages

*** RebDev Error: server connection failed, is server down? (server-failed)
** Script error: cause-error-here has no value

** Where: error if unless request-serve if check-msgs check-new make 
context do
catch applier do try chat
** Near: error result


We have no way to return in a safe situation and can't guess what 
is the bug indeed.


Is Carl aware of that problem, i didn't see anything related to a 
crash of a48 when starting the chat ?

try again

It works for me. Does this happen every time?

Not anymore, but it was like that during 1 hour at least

damit, i tried during one hour and just when you say: try again, 
it works....

i have very

i have a very bad connection currently, could it be related to some 
network errors bad managed by the http scheme ?

but a crash, geez....

it's violent

The HTTP scheme needs a lot of work at the moment - it's a work in 
process. What is there already works great, but it's incomplete.

I think error handling is part on the incomplete part.

yep but there is more than just a missing part in the error handling, 
it's crashing rebol, it's bad...

and i can't say why, there is no given reason

I haven't had the chance to go over the scheme yet, and Gab and Maarten 
have been busy.

New blog posted - http://www.rebol.net/r3blogs/0193.html- collect-words

And that might be enogh to implement Ladislav's FUNCTOR - I'll check 
with Carl first to see if he has any plans for the existing one.

Ladislav, I've made the case for your FUNCTOR in R3 chat #3726. Join 
in on the discussion if you like.

hey guys, have we a clever way to extract same variables with different 
values in 2 different objects ?
In one word: the difference.
I mean, without doing a nasty loop

i tried, 
>> difference/skip values-of obj1 values-of obj2 2

but it fails (something wrong with the difference function when values 
are none!)

Please, don't say to me, the only hope is to do a foreach loop.

not rebolish

you write VALUES-OF, but do you mean a block of words that are different?

you may come with something completly different, i just want the 
list of variables which have different values

now that we have FOREACH on objects, it could be a good time to ask 
on the blog or in chat.

Hey, that's not clever at all

I was referring to that the FOREACH change was in the same ballpark 
as would be required for this to work without making loops.

even with UNIQUE, i got a stupid result.

>> obj2: make obj1: context [a: b: none] [a: 1]
== make object! [
    a: 1
    b: none
]

>> unique/skip append body-of obj1 body-of obj2 2
== [
    a: none
    b: none
    b: none
]

what's wrong with all thess bugous functions ?

/skip doesnn't work at all in INTERSECT, UNIQUE, DIFFERENCE, UNION...

pfff....

please note it in curecode, thanks

boring...