World: r3wp

The most efficient way to add non-conditional code is to put the 
code in the conditional clause and have none for the associated code 
block. There are several lines like that in LOAD-HEADER.

And it is definitely more efficient evaluation in R3, and R2 as well.

What makes CASE/all different from a long sequence of IFs?

 - as far as I am concerned, I simply don't use, and never used CASE/ALL

You should try it, it's not bad.

Do not have any code where it would be of any advantage

As far as the maintainability of the code goes, it shall be noted, 
that CASE/ALL is one of the worst constructs to test.

I have two CASE/ALLs in NLPP (Ladislav knows what NLPP is). :-)

http://www.saphirion.com/downloads/files/saphirion_nlpp.pdf

Nevertheless, the code could be replaced, if needed, but it looks 
to be working ok with CASE/ALL.

I've never had a problem with CASE itself, /all or not. If it is 
tough to test I've never seen it.

There are a few functions in R3 that take the form of a CASE/all 
followed by a CASE. SAVE is one such function, though it has a series 
of IF statements at its beginning leftover from before that could 
be made more efficient by adding to the beginning of the CASE/all.

CASE/all is no more difficult to test than the series of IF statements 
it replaces. Easier to analyze, because it's more structured.

CASE/all is no more difficult to test than the series of IF statements 
it replaces.
 - yes, sure that is true

As to why CASE/ALL is hard to test: for example, if you have 10 cases 
in a CASE statement, and use 10 different tests for testing such 
a code, then, to be as thorough when CASE/ALL using 10 cases you 
would need 1024 tests.

sorry for the formulation, but I hope the idea is clear

Is this a problem, or a change in execution model?

     b: reduce ['now]
    do first b
    (nothing on console)
    do do first b
    == 2-Mar-2011/13:10:13

R2 will respond with the date with only  one DO

A change in execution model

Anyone knows if error printing is currently hookable in R3? I.e. 
is there a function somewhere which is called by the interpreter 
when an error! escapes to the top-level?

Not currently.

Bug?

>> a: context [f: does [print b] b: none]
== make object! [
    f: make function! [[][print b]]
    b: none
]

>> c: context  [b: make map! [m 4]]
== make object! [
    b: make map! [
        m 4
    ]
]

>> a1: make a c
== make object! [
    f: make function! [[][print b]]
    b: make map! [
        m 4
    ]
]

>> a1/f
none

Appears to be a bug. I'm writing the ticket now.

See here for details: http://issue.cc/r3/1863

Does tab for path completion not work anymore ?

Or, did it never work?

never worked in R3

ok.

How bad would it be to have a strict  version of rebol vs a relaxed 
version.  I'm thinking of things like skip which require an integer 
and choke on none ...

It would be bad to have a non-strict version, as someone might use 
it.

That's only bad if their scripts were published or used by others.

Can I create object from block of words and values?

*blocks of... like -  words: [a b] values [1 2]

This is one (fairly manual) way:
    words: [a b]
    values: [1 2]
    obj: make object! []
    for n 1 length? words 1 [
        append obj words/:n set in obj words/:n values/:n
        ]

set bind/new/copy words obj values

yes..I though that there may be some fast native function for it 
;)

ah, thanks!

The /copy is only necessary if you will be reusing the words block.

This line of code (complete with typo of extra colon on the ONLY) 
works in R2
    a: copy [] insert/only: a 8
But, in R3, it acts as a no-op

Neither behaviour seems reasonable -- why not a syntax error?

There is a ticket about that already.

Thanks -- must have missed that one.

See http://issue.cc/r3/1558and http://issue.cc/r3/1559

the rebol3-gui of RMA is on a good way. now we would like a R3 fixe 
to have the GUI on Linux & Mac !!!!!

Is there some good documentation about ports and schemes? Finding 
anything on rebol.com is almost impossible.

I don't know of anything current from RT, but maybe these will help:

http://www.rebol.net/docs/prot-http.html
http://www.rebol.net/docs/
http://www.compkarori.co.nz:8000/Rebol3/Schemes/Http

Thanks! I also found this useful doc

http://www.rebol.net/wiki/Schemes:Notes

There were imo better docs. I'll try to find my previous posts, I 
gathered some links ...

http://www.rebol.net/wiki/Ports
http://www.rebol.net/wiki/Port_Examples

http://www.rebol.net/r3blogs/0130.html- More about Port layers - 
the OSI Model

http://www.rebol.net/r3blogs/0129.html- Simple TCP example: HTTP 
web page transfer
http://www.rebol.net/r3blogs/0128.html- Skip and Seek on ports
http://www.rebol.net/wiki/TCP_Port_Details

Should we copy these to the REBOL 3 Schemes group?

I have not understood REBOL response of Sunanda question

     b: reduce ['now]
    do first b
    (nothing on console)
    do b
    ==6-Mar-2011/0:48:32+1:00
    do do first b
    == 6-Mar-2011/0:48:32+1:00


Why 2 "DO" are needed when you use FIRST ? Which is the difference 
?

The same for DO B/1. Which is the difference between the WORD "now" 
used by "DO B" and the WORD "now" you get from DO B/1 ?

In R3, DO of a word! value is basically equivalent to GET of the 
word. So in the example above, the first DO performs a GET of 'now, 
retrieving the value assigned to it, the NOW function. Then the second 
DO of the value of the NOW function performs that function.