Some questions
[1/8] from: brett::codeconscious::com at: 25-Jan-2002 10:25
The questions below were emailed to me directly by a Miva developer who is
interested in Rebol.
I'm posting them here because I'm not confident in answering them
accurately. Help please. :)
Thanks,
Brett.
Anyhow, I have a couple more questions that I hope you can answer. I'm
starting up a new project that I think Rebol will be very good for, but that
means I need to master it in about three weeks :)
1. With Rebol Command, a developer has, among other things, the power to use
ODBC databases that are located on the server, right? I have never used
ODBC databases scripting, only DBF databases. Where exactly do these
databases reside (normally)?
2. Can a .r be compiled for speedier execution?
3. In order to run a .r file from a server, does the server need some sort
of Rebol engine on it, or is the Rebol engine only on the client side? What
about accessing DB's and DLL's on the server side? Would a normal user be
forced into purchasing Rebol View Pro in order to access .r files that
control databases and access various DLL's? I'm a bit confused about this
one because all interpreted languages that I know of need the engine and
various modules to reside on the server to allow that sort of thing. If
things do need to be installed on the server, are there good Rebol hosts out
there?
4. Is it true to AOL is going to ship with Rebol built in? Does this mean
that AOL users will be able to run Rebol files without having to install a
special
If you can give me some insight into these things, I'd certainly appreciate
it!
[2/8] from: al:bri:xtra at: 25-Jan-2002 13:03
Miva developer wrote:
> 2. Can a .r be compiled for speedier execution?
No. But Rebol scripts are quite fast anyway. My CGI scripts in Rebol take
less than a second to run.
> 3. In order to run a .r file from a server, does the server need some sort
of Rebol engine on it, or is the Rebol engine only on the client side?
The server needs to run the Rebol executable in order to process Rebol
script at the server.
> What about accessing DB's and DLL's on the server side? Would a normal
user be forced into purchasing Rebol View Pro in order to access .r files
that control databases and access various DLL's?
The user doesn't need to purchase Rebol/View/Pro, only the people
controlling the server side do.
If using Rebol/IOS, I think each user needs Rebol/IOS on their machiner, and
the server needs Rebol/IOS. All this in my opinion only.
Andrew Martin
ICQ: 26227169 http://valley.150m.com/
[3/8] from: pwoodward:cncdsl at: 24-Jan-2002 19:04
Brett
> 1. With Rebol Command, a developer has, among other things, the power to
use
> ODBC databases that are located on the server, right? I have never used
> ODBC databases scripting, only DBF databases. Where exactly do these
> databases reside (normally)?
It really depends on the configuration of the Data Source Name (DSN) under
ODBC. The database behind the DSN could be "anywhere" the system running
the script can connect to. Think of the DSN under ODBC as a stub or pointer
used to connect to the database. That database could be stored on the local
system (in the form of a DBF file for instance) or on some remote system (as
would likely be the case if you were using Oracle or SQL Server).
> 2. Can a .r be compiled for speedier execution?
Someone can probably talk more about "encap" - but my current understanding
is that typically server-side Rebol is not compiled.
> 3. In order to run a .r file from a server, does the server need some sort
> of Rebol engine on it, or is the Rebol engine only on the client side?
What
> about accessing DB's and DLL's on the server side? Would a normal user
be
> forced into purchasing Rebol View Pro in order to access .r files that
> control databases and access various DLL's? I'm a bit confused about
this
> one because all interpreted languages that I know of need the engine and
> various modules to reside on the server to allow that sort of thing. If
> things do need to be installed on the server, are there good Rebol hosts
out
> there?
Yes. The server would need some version or another of the Rebol environment
installed. For ODBC connectivity this would probably be /Command. Using
Rugby standard Rebol clients could connect to the server and leverage the
ODBC connectivity supplied by one installation of /Command (and any DLLs
used by scripts on the server). Or - the Server-side Rebol installation
could be used to power an HTML/CGI interface. However - there don't seem to
be a huge number of internet hosts offering Rebol.
> 4. Is it true to AOL is going to ship with Rebol built in? Does this mean
> that AOL users will be able to run Rebol files without having to install a
> special
Uhh - who knows? I think the big announcement was the whole P2P sharing
thing, but maybe there's an AOL deal in the works.
- Porter Woodward
[4/8] from: greggirwin:mindspring at: 25-Jan-2002 10:19
Hi Brett,
<< 4. Is it true to AOL is going to ship with Rebol built in? Does this
mean
that AOL users will be able to run Rebol files without having to install a
special >>
Unless RT jumps in, I don't think so. StreamCast/Morpheus is the only large
on-line provider I know of that RT is going to be released with, or will
provide technology for.
As an aside, if it's an important project, I would be hesitant to try a new
tool out with such a short deadline. It depends on the needs of course but ,
if I'm not familiar with a tool, trying to use it under pressure as an
introductory experience isn't something I'd choose to do.
--Gregg
[5/8] from: riusa:email:it at: 11-Apr-2002 16:41
Hi all!
I have encountered some problems during a software development.
1) I want to store the name of a field in a variable and I want assign
the focus to the field whose name (or obj reference) is stored in such
variable. How can I do?
2) What can I do to change the color (which refiniment) of the
background of a field?
thank you !
bye!
-- Alessandro --
--
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[6/8] from: greggirwin:mindspring at: 11-Apr-2002 12:08
Hi Alessandro,
<<
1) I want to store the name of a field in a variable and I want assign
the focus to the field whose name (or obj reference) is stored in such
variable. How can I do?
2) What can I do to change the color (which refiniment) of the
background of a field?
>>
Let me know if this helps.
view layout [
f-1: field
f-2: field
button 200 "Goto Field 1" [focus f-1]
button 200 "Goto Field 2" [focus f-2]
button 200 "Set Field 2 color" [
;f-2/colors/1: red
f-2/colors: reduce [red green]
show f-2
]
]
--Gregg
[7/8] from: anton:lexicon at: 12-Apr-2002 14:21
You can also specify the colours directly:
view layout [field green blue]
Or make a style of it:
view layout [
style field field green blue
field field field
]
Anton.
[8/8] from: riusa:email:it at: 12-Apr-2002 9:43
Hi Gregg,
it functions! I didn't find the correct refinement [colors/1 and colors/2].
thanks.
=================================================
> Hi Alessandro,
> <<
<<quoted lines omitted: 17>>
> ]
> --Gregg
--
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