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World: r3wp

[Core] Discuss core issues

Gregg
11-Feb-2008
[9064]
If you want to provide exact details, you're going to have to do 
some analysis and processing yourself.
Henrik
12-Feb-2008
[9065]
>> read http://store.apple.com

connecting to: store.apple.com
connecting to: store.apple.com

** User Error: Error.  Target url: http://store.apple.com/1-800-MY-APPLE/WebObjects/AppleStore
could not be retrieved.  Server response...
** Near: read http://store.apple.com

That's not a particularly useful error?
Sunanda
13-Feb-2008
[9066]
Nice thread contrasting LISP and REBOL:

http://coding.derkeiler.com/Archive/Lisp/comp.lang.lisp/2008-02/msg00756.html
Reichart
13-Feb-2008
[9067x2]
Would be cool to reduce that argument (debate) to a table (like Gregg 
did for Python).  If someone does that part, I will update the Qwiki...
Would love to have a collection of REBOL vs EVERYTHING
Gabriele
13-Feb-2008
[9069]
Henrik, btw, R3 can read that URL.
Oldes
13-Feb-2008
[9070x2]
I can read it from R2 as well
And one can always use  trace/net on  to see, where is a problem
Henrik
13-Feb-2008
[9072]
must have been while the store was down. some one came up with a 
bash script to check when it would come up again, and thought it 
would be easy to do in rebol, but no. :-/
Oldes
13-Feb-2008
[9073]
but maybe it's because I'm using my own version of http scheme
Henrik
13-Feb-2008
[9074x3]
works in standard R2 right now
when the store is down, the replace the page with a message. it's 
not like the site goes entirely down.
they replace
Oldes
13-Feb-2008
[9077]
ah... you have to use modified scheme for that if the site is responding 
something with error message.
Henrik
13-Feb-2008
[9078]
interesting. would it be qualified for 2.7.6?
Oldes
13-Feb-2008
[9079x3]
or you can use this:

if error? set/any 'err try [read http://store.apple.com][  err: disarm 
err probe err/arg1]
the server response is truncated only in console... I've just tested 
it with a very long invalid local url.
and someone should fix the altme to display correctly urls... is 
it just me who don't like it? Such a visible thing:/
Henrik
13-Feb-2008
[9082]
yes, I don't like it either...
Oldes
13-Feb-2008
[9083]
and it's such a simple fix.. it just needs to enhance the width of 
the face which is used to measure the width of the text.... I bet 
it's just a one byte fix.
Henrik
13-Feb-2008
[9084x2]
let's bring it to the 2.7.6 group and point it out there.
sorry, I'm talking nonsense.
Gabriele
14-Feb-2008
[9086]
if it's an error response, you can catch it in R3 in async mode. 
:) more work, but you don't need to hack the http scheme.
james_nak
15-Feb-2008
[9087]
Here's something I haven't figured out yet: Let's say I have an object 
that includes other objects
make object! [
lists: ["tom" "fred"]

objs: [ [ make object! [ name: "hello"] ] [make object! [name: "world"] 
]  ]
]

When I "load" this back from a file, is there a way I can "do" the 
entire object. It appears that the obj/objs remain in their rebol 
form but are not "real" objects. For now I have been just "doing" 
them as I get to them but it sure would be nice to simply get it 
done all at once.

Thanks, I hope you understand what I mean.
Graham
15-Feb-2008
[9088]
do you try save/all to save the object to a file?
Anton
15-Feb-2008
[9089]
James,
Create some nested objects:


 objects: context [objs: reduce [reduce [context [name: "hi"]] reduce 
 [context [name: "there"]]]]
	
Save them in a binary (should be just like saving to file):

	bin: make binary! ""
	
	save/all bin objects
	
Load back from the binary (should be like loading from file):
	
	objects2: do as-string load bin
	
Test to see if the nested objects were created properly:	
	
	>> type? objects2/objs/1/1
	== object!

	>> probe objects2/objs/1/1
	make object! [
		name: "hi"
	]
[unknown: 5]
16-Feb-2008
[9090]
I need to be able to explicitly determine if something some functions 
return false as their value.  I wrote a quick function to do this 
but shouldn't we already have something that does this?

My function is:


false?: func [val][either all [logic? val not val][return yes][return 
no]]
btiffin
16-Feb-2008
[9091]
That would be truefalse  :)   Sorry, couldn't resist.  But, yes, 
REBOL is very tri-state with the t f none thing. And zero being true, 
as a forther still rubs wrong, but that chaffing is almost over and 
done with.  Plus RebGUI now supports bi-state options, so life is 
good(er).  :)
[unknown: 5]
16-Feb-2008
[9092x2]
no that function wouldn't tell you if something is true.
true? func [val][either all [logic? val val][yes][no]]
btiffin
16-Feb-2008
[9094]
Sorry, I meant   a "true" false.
[unknown: 5]
16-Feb-2008
[9095]
yes
btiffin
16-Feb-2008
[9096]
I investigating the deets, but you might get away with strict-equal? 
   res == false; need to test.
[unknown: 5]
16-Feb-2008
[9097]
what is the difference again between strict-equal? and equal?
btiffin
16-Feb-2008
[9098x2]
strict-equal? compares value and type, and then there is identical 
testing with =?   where

a: "abc"  b: "abc"     a =? b  is false   c: a   a =? c  is true 
(pretty much has to occupy the same ram)
Oh just in case   1 = 1.0 is true   1 == 1.0 is not.
[unknown: 5]
16-Feb-2008
[9100]
that is what I thought btiffin - when you mentioned using strict-equal? 
you have me confused.  How did you see it being used in a true false 
function?
btiffin
17-Feb-2008
[9101]
Instead of    if false? expression [ ]   you might get away with 
 if strict-equal? false expression [ ]   and skip writing the false? 
 func.
Anton
17-Feb-2008
[9102]
All you should ever need is 
	= false
btiffin
17-Feb-2008
[9103]
Good point.  Paul ... What Anton said.  ;)
[unknown: 5]
17-Feb-2008
[9104x4]
Yeah I don't see a need for a true function only a false function.
Anyone know of a bug in REBOL where the word "end" shows up in a 
list! of values?  I have got this weird problem where the word "end" 
shows up in what should be a list! block of nothing but integers 
but instead I have integers and a few references of the word "end" 
without the string as it is not a string datatype.  If I do a foreach 
and attempt to step through each item it crashes on that entry.  
I can't determine what datatype it is.  I looked at my code and nothing 
in my code or the data it handles contains the word "end".
I did some more research and it appears that the "end" I seen is 
a datatype.  I didn't even know there was an end! datatype.
here is what the list block looks like for example:


== make list! [1 4 5 end unset 6 7 8 9 10 11 12 13 14 15 16 17 18 
19]

except it is a lot longer


I'm not sure why I'm getting the unset! or the end! datatypes at 
this point.  I only use insert to add to this list and all the values 
being inserted should be integer datatypes.
Geomol
17-Feb-2008
[9108]
You could test, if what you're inserting actual is an integer. Something 
like:

if integer! <> type? value-to-insert [print ["Not an integer:" value-to-insert]]
[unknown: 5]
17-Feb-2008
[9109]
I actually did that and it got no errors which really has me a bit 
stumped.
Geomol
17-Feb-2008
[9110x2]
That's weird. Could you test, if the just inserted value in the block 
is not integer!? Like:
if integer! <> type? first blk [print "something"]
And do that for every insert.
[unknown: 5]
17-Feb-2008
[9112x2]
Well that is actually how I did my test.  I had the following in 
the subject area of the problem:


if not integer? record-number: first to-block raw-record [print record-number]

Problem is that it never printed anything
Maybe someone can tell me what the end! datatype is used for and 
that might help find the problem