World: r3wp

Does seem straight forward when you explain it like that :)

you verification could be something like:

unless all [ctx1/done? ctx2/done? ...] [ 
	;all done, do whatever
]

or using an integer with bit handling, it could be as simple as 

; a four bit setup
unless done-bits = 7 [
]

and to set individual "done" bits

xfer-context: [
  set-done: does[ 
     done-bits: done-bits OR power 2 index? find port-list self
  ]
]

:-)

usualy, when dealing with bits, it's better to use bitset!, all operations 
are faster (insertion, modification, search)

i noted that bitset! are mostly under rated by rebolers

I think it's about language compactness.

what do you mean ?

for non-compact languages like Rebol, users form their own compact 
subsets and tend to use them exclusively.

the bit example is just a 20 year old programming habit... hehehe 
 I do find the bit sets a bit awkwards...  but I use them profusely 
in parse... 
go figure... hehehe

So, better programmers will use more of the language than others. 
 Which is why it's a good idea to read other people's code :)

i use them not only in parse

i use them to build fast indexes for examples

So, C and Python are considered semi-compact languages, and C++ an 
anti-compact language.

I expect languages like REBOL and forth that expand their own dictionaries 
are not as compact as Python.

define compact.

cause syntactically, rebol has extremely few rules.

Compactness is a measure of how easily a design can fit inside one's 
head.

Well, I've got it working mostly.  sometimes it doesn't kick off 
an async function ... and seems to need a wait here and there :(

REBOL is very compact. Everything is either a word or a value, and 
even words can be values.

Graham, by your standards REBOL 3 is more compact than REBOL 2, but 
maybe that is just to me.

Once you start adding Draw into it though, I lose the whole. With 
R2 there is also the broken port model, design flaws and legacy stuff, 
so I lose the big picture a lot quicker. Python I don't know much 
about, and C is getting more complex all the time. I guess it depends 
on the head.

LOL.... the toplogy of the head determines if you can wrap it around 
a language...

Yes I would put view as part of REBOL.

Here is a post about the read-io function for newbies.  http://www.tretbase.com/forum/viewtopic.php?f=8&t=55&p=128#p128

Paul, what are the issues with 'read-io on network ports?

The only think I recall is that Holger use to express (this was obviously 
years ago) that we shouldn't use read-io for network ports and instead 
use copy instead.

I remember Carl writing, that here is no need anymore to use read-io 
and write-io after a certain version.

But I use it still sometimes to see when data could not be written, 
because there is no space anymore  left on disk

IIRC, for a server I did, I had to use read-io, don't rememeber why 
but it made it simpler in a complex and timed server multi-port management 
loop (direct tcp socket handling).

the only case where you need read-io and write-io currently is if 
you are using async-modes. sqlab's may be a good case too. i don't 
know of others at this point.

Why is that Gabriele?

I'll be implementing an async server soon so any info is good info 
in that regard.

because async-modes is a hack in rebol, and only works with read-io 
and write-io.

Ahhh, good to know Gabriele.

I hope you can expound on that when you get a chance.

Hi.

Let's see this code:

toto: [25 10 14]

renv: func [b [block!]]
[
 foreach Val b [ print Val + 1]
]

when I call this function, with "renv [ toto] ". I receive an error 
message because the elements in toto are viewed as word!, not as 
integer! by Rebol.

you've got a block inside a block

?

you can't add 1 to a block

renv [ toto ]

and toto has no value

ok, but when I use the same code without insert it in a function, 
it work perfectly

renv reduce [ toto ] => renv [ [ 1 2 3 ]]

the code :

toto: [25 10 14]
foreach Val toto [ print Val + 1]

work because elements in toto  are considered as integers.

and so will

renv toto

but not 

renv [ toto ]

oh ... I'm stupid ! ;)

you are in Rebol School ;-)