World: r3wp

same question for any : any [false false false]  should return false 
or none ?

any is more difficult to change it that case. any "returns the first 
value that is not none or false". there is no such value in that 
block - so what should it do?

should it return the last value anyway?

For me any and all should never return false. That's my opinion.

The problem I see is that I often use ANY and ALL as a condition 
and it it returns NONE I can't do anything with it. IMO this pattern 
should be possible:
	either ANY [...][yes][no]

DESCRIPTION:

     Shortcut AND. Evaluates and returns at the first FALSE or NONE.
     ALL is a native value.

How about returning than either FALSE or NONE which every was hit? 
That makes sense to me. So I can ensure that my app returns FALSE 
and that this value is returned. But now I return FALSE and get back 
NONE.

If you want to return FALSE instead of NONE, use FOUND?

>> found? any [true true false]
== true
>> found? all [true true false]
== false

:-)

I don't see the problem with either any [...][yes][no] :
>> either ANY [true false]["yes"]["no"]
== "yes"
>> either ANY [false false]["yes"]["no"]
== "no"

robert: either takes any value, false or none are "false", anything 
else is "true".

also, yes, found? is the default way to make a value into a logic! 
. not is also a nice way to do that, when you can/need to reverse 
the logic.

found? is the most elegant one so far. But the word's meaning isn't 
that good in such a case. I didn't searched anything...

Using EITHER and hence mapping the result on TRUE or FALSE is IMO 
a hack. It works (that's how I do it) but it's not logical. Maybe 
a refinment for ANY and ALL makes sense.
	ALL/logical and ANY/logical

I can see situations where it's very handy that ANY will return the 
result of some actions and not only TRUE and FALSE.

You can use TO LOGIC! directly, or write a mezz with a better name, 
that wraps it.

Something like RESULT? maybe, and it could also handle unset values 
if that's needed.

Robert: I think, ANY and ALL are meant for little bit 'wilder' things 
than returning TRUE or FALSE. Remember they return *AT* first false 
or none, it's not that they should return FALSE - which is important

simple example
>> a: 5
== 5
>> all [a < 3 a: a + 1]
== none
>> a
== 5
>> a: 1
== 1
>> all [a < 3 a: a + 1]
== 2
>> a
== 2

Yes, I know. And I often use this feature as well. That's why I think 
the refinement approach is best.

>> true?: :found?
>> true? all [conditon-1 conditon-2 conditon-3]
>> true? any [conditon-1 conditon-2 conditon-3]

A bit surprising though is:

>> true? all []
== true

At least it conforms to it's description saying "Shortcut AND. Evaluates 
and returns at the first FALSE or NONE." There was no first none 
or false.

double colors in 'draw dilect does crsh view... Is that known?

Without the use of line-pattern..

effect: [ draw [ 
			pen gray silver
			line-width 15
			line-join round        
			line 22x220 150x350
	 ] ]

I confirm on WinXP.

So am I.

discovered it last week... I imagined it was a known bug... but I 
didn't check  ':-/

It's in RAMBO #4040 http://www.rebol.net/cgi-bin/rambo.r?id=4040&

Cyphre said it's fixed, but not release yet (if I understand correctly)

Yes, I think I reported that bug to Cyphre during work on Compo demo. 
I hope there will be upgrade to View to fix this and other bugs, 
but I'm afraid that with R3 behind the door (you now, in just couple 
of days we're going to see the roadmap ;-), bugfixes for current 
View will be late.

:-) so we've got more couples of days, so what :-)

but look, I am not sure - Carl told us that submissions for 1.3.3 
should be submitted by us .... why Rebol 3.0 should prevent new View 
release, if bugs are already fixed? It is worth release then, even 
if no new additional functionality is released (as rich-text etc.)

Just noticed daylight savings ended. Windows changed the timezone 
from +11:00 to +10:00, but rebol still reports 
>> now
== 26-Mar-2006/2:09:58+11:00

RAMBO #3650 "crc32 function added to checksum" - I have just contributed 
a crc32 function to the rebol library. It's quite slow, but the rebcode 
version is fast enough. CRC-32 is still used by common tools (archivers...), 
and an implementation in the 'checksum native would be useful.

Do all these crc functions require the whole file to be read into 
memory?

Yes - both the native 'checksum and the published 'crc-32 works on 
a string! or a binary!, not a port! . For crc-32, the crc must be 
initialized at start, and complement'ed (bitwise 'not) at end.

- I have an internal function in crc32.r who allows working with 
big files and stream, but it isn't fully documented.

does it work though ?  :)

well, I hope so - it's the fundamental brick ;) but it's not intuitive, 
usage exemple (depends of port access mode...): 

crc: -1 while [not empty? data] [ctx-crc-32/update-crc data crc data: 
copy/part source length] crc: crc xor -1

so, it has minimal memory use with gigabyte size files?

crc-32.r with gigabytes files: [don't do it] - it works, the memory 
used isn't size relative - but on a 1GHz PIII, the speed is < 300 
kbytes/s! 
rebcode version is a lot faster (>2Mbytes/s), but 
1) rebcode isn't part of official releases 
2) the rebcode version of 'crc-32 needs whole file in memory.

so, back to RAMBO: #3650 - I vote for 'crc32 as another 'checksum/method, 

and maybe a RAMBO ticket for a port aware version of 'checksum would 
be a good idea.

I think this is a bug:
>> read http://www.paseka.cz/obalky%5C80-7185-652-5.jpg

** User Error: URL error: http://www.paseka.cz/obalky\80-7185-652-5.jpg
** Near: read http://www.paseka.cz/obalky\80-7185-652-5.jpg

What can I do?

I don't want to translate the url encoded chars:(
>>  http://www.paseka.cz/obalky%5C80-7185-652-5.jpg
== http://www.paseka.cz/obalky\80-7185-652-5.jpg

This works:

>> net-utils/url-parser/parse-url port: make port! [scheme: 'http] 
"http://www.paseka.cz/obalky%5C80-7185-652-5.jpg"
>> port/target
== "obalky%5C80-7185-652-5.jpg"
>> port: open port
connecting to: www.paseka.cz
>> close port
>> port: open/binary port
connecting to: www.paseka.cz
>> bin: copy port
== #{
FFD8FFE000104A46494600010100000100010000FFDB00430008060607060508
0707070909080A0C140D0C0B0B0C1912130F141D1A1F1E1D1A1C1C20242E...
>> close port
>> image: load bin
== make image! [200x280 #{
968662958665918168584B3A2A1D15281E1C241B1C1D1717211D1C211D1A
1F1E1A1F1E1A1F1D1E1F1D20211C23211C23211C202...

(Oops! Obviously you can remove the first open & close port in text 
mode. Not necessary.)

I understand, thanks. Anyway, I submited it into Rambo.

Ahh.. of course you do! (I thought it was strange me helping Oldes.)

encode the % as %25