World: r3wp

Looking at 'ALTER.. shouldn't there be a similar word that "If a 
value is not found in a series, append it; otherwise, DO NOTHING?

In other words.. i want to check the series to see if the word exists.. 
if not, add it..

Seems this should be an argument for 'ALTER

addWord: func [ser wrd][if not find ser wrd [append ser wrd]]

unioning your test word with your block of words may work

color: [ red blue green]
== [red blue green]

>> color: union color [red]
== [red blue green]
>> color: union color [yellow]
== [red blue green yellow]
>>

stack: Gregg, yes these are true words about using the same name. 
But let's face reality, those data-structure stuff is quite old and 
is learned at university. Most programmers are used to them. And 
from the name of the functions I can implie to the datastructure 
used. Someone not common with Rebol might not "see" that this simulates 
a stack.

You need to know the common sense data-structures anyway. But to 
be honest, the code is quite dated. I use it in MDP to handle the 
parsing state.

anyone know what causes an error 

** user error: system error: tcp

make error! "system error: tcp"

maybe?

no .. not in this instance.

So far I've push'ed and pop'ed stacks (blocks) at the bottom, because 
I presure, it's faster that from the top (because of memory allocation)

 -- Yes. For block! values that is very true. For list! values it 
 isn't. For blocks it's a zillion times faster...well, for small blocks 
 it's faster and for big ones it's a *lot* faster. If you're making 
 a million changes to a 10,000 item block, it's a big difference.

Q: how can I determine the pointer for a struct!  (or variable)  
for passing this pointer  to a external dll ?

or better explained, howto create a pointer. is there something like 
to-pointer ?

if you pass the struct, a pointer is automatically passed. anyway, 
Ladislav has functions to get pointers to memory. I don't have the 
link at hand though...

you need a pointer to Ladislav's URL struct!    ;-)

took a while to find this ... http://www.fm.vslib.cz/~ladislav/rebol/

not sure that Gab's reference is there, but tons of goodies there...wow!

http://www.compkarori.com/vanilla/display/peek_and_poke.r

anyone recall offhand what the function is that decodes url encoded 
text back to normal?

decode-url

that takes a url

I'm just looking for the function that decodes the text and returns 
text, and not an object

it's likely to be called by decode-url

there is a parse-url  but it is burried in an objecr and not public/global

yeah, it's in there somewhere

see ?? decode-url

dehex?  (preceded by replace/all text "+" " ")

dehex looks good :)

Remember & < and > if you have any of those in the text. 
Shall be replaced by &, < and >.

graham there is a  web-to-plain.r  at http://www.cs.uoregon.edu/~tomc/
that may work for you

if you have more char enties than just hex encoding

there were some note on it in Core release notes IIRC, de-hex and 
decode-url

the microwebserver at http://www.rebol.org/cgi-bin/cgiwrap/rebol/view-script.r?script=webserver.r
doesn't decode spaces etc so comes a cropper if the file on disk 
has a space in it.

The authors, not mentioned, were "Tyler Booth" "Jeff Kreis" "Bohdan 
Lechnowsky"

http://www.rebol.com/docs/changes.htmlnot so much on decode-url, 
but decode-cgi yes.

how to: create a array of objects ? (like arrays of udt's)

blk: copy []
loop 10 [append blk make object!  [a: 1]]

wow, fast reply. thx sunanda. last question: what syntax I need to 
access e.g.  object array no. 5 or 8  to write values like  blk/a: 
recordset ?

I have a object with - name, street, and country and a database with 
50 records. I would like to store the records into a dynamic object 
array for later reading...

equivalent to above, but a bit faster in execution (maybe you have 
a large block):

blk: make block! 10

loop 10 [insert tail blk make object! [name: copy "<name>"]] ; COPY 
so all objects don't share the same string

objects: copy []
person: context [name: copy "<name>" address: copy "<address>"]

get-record-item: func [n field][copy ""] ; <--- you have to make 
this function look into the database

repeat n 50 [append objects make person [name: get-record-item n 
'name address: get-record-item n 'address]]

thank you anton. this is the code I was looking for :-))

oups, how do I read (after appending) record no. 45 ?   person/name 
 (45) ?

objects/45/name

record-num: 45
objects/:record-num/name
;== "aristotle"

That is putting a GET-WORD! in the path. (eg.  :record-num   )

yes, that's it ! running smoth and fast... thank you very much anton.

no problem at all.