[REBOL] Creating unique ID's?

2002-07-16 Thread Ingo Hohmann

Hi Rebols,

I need to create ID's which are unique over even when they are created 
on different machines, or several poeple on the same machine, etc. Does 
anyone have a better idea than

   unique-id: join join system/user/email system/network/host now/precise


Thanks in advance

Ingo


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[REBOL] Re: Creating unique ID's?

2002-07-16 Thread Jason Cunliffe

 I need to create ID's which are unique over even when they are created 
 on different machines, or several poeple on the same machine, etc. Does 
 anyone have a better idea than
 
unique-id: join join system/user/email system/network/host now/precise

clear and simple strategy :-)
with an interesting result also..

 unique-id: join join system/user/email system/network/host now/precise
== [EMAIL PROTECTED]/10:19:11.76-4:00
 type? unique-id
== email!

That's a fine domain name.

./Jason

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[REBOL] Re: REBels in Toronto ?

2002-07-16 Thread Kemp Watson

Georgetown, eh?

I'm excited by REBOL and various other 'new-age' languages, and thought that
perhaps a user group with occasional get-togethers might help promote the
langauges a bit locally, and help open people's minds beyond VC++, VB, Java
and .NET.

I'm thinking about setting up a Vanilla site with areas for Oz/Mozart,
Erlang, REBOL, Ruby, Python, Self, Eiffel, Icon, Haskell, OCaML, Sather,
Lua, etc.

About 10 of us in Toronto did this a decade ago when OO first hit - it
helped a lot. Good way to find a community of competent, open thinkers, too.

- Kemp

-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
webmaster
Sent: July 15, 2002 11:33 PM
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Subject: [REBOL] Re: REBels in Toronto ?


Yes.

I'd be interested to hear what you have in mind.


Kemp Watson wrote:

 Anyone using REBOL in or near Toronto?
 Jus' curious about setting up a local support group...

 - Kemp

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[REBOL] Re: Creating unique ID's?

2002-07-16 Thread Gregg Irwin

Hi Ingo,


I need to create ID's which are unique over even when they are created
on different machines, or several poeple on the same machine, etc. Does
anyone have a better idea than

   unique-id: join join system/user/email system/network/host now/precise


I guess that depends on *how* unique they need to be. For example, if you
call this twice in a row, you'll very likely get the same ID so it's not a
good substitute for something like the DCE UUID approach, but that may be
overkill. If you need ID's that are *guaranteed* (or as close as we can get
to that) to be unique across time and space, I think you'll need to do more.
Adding a random element would be a good start.

There was a short discussion on the list in mid-January about UUID
generation.

--Gregg

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[REBOL] Re: Creating unique ID's?

2002-07-16 Thread Joel Neely

Hi, Ingo,

Ingo Hohmann wrote:
 
 Hi Rebols,
 
 I need to create ID's which are unique over even when they are created
 on different machines, or several poeple on the same machine, etc. Does
 anyone have a better idea than
 
unique-id: join join system/user/email system/network/host now/precise
 

If you can stand a *very* small (but non-zero) probability of a
collision, you can avoid publishing user and/or host information
by using

checksum/secure rejoin [
system/user/email system/network/host now/precise
]

which, for example, on one of my boxen gives

#{0CFD7B12DBFAD911FD68BD4AA6862AA5AD3F4D17}

and I'll offer a reward of a virtual cookie to anyone who can
determine who/where/when from the above.

In theory, there's a 1 : 2 ** 80 chance (1 in 1.2E24) of a collision
between different ids.

-jn-
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[REBOL] TIFF images

2002-07-16 Thread Abdel Belkasri



Hi there!

   I know how to load an image as long as it is GIF or JPEG...how can I load
TIFF images?

Thanks.
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[REBOL] Re: TIFF images

2002-07-16 Thread atruter


From memory, REBOL only supports loading JPEG, PNG, BMP and GIF formats.
Save support is limited to PNG and BMP.

Regards,

 Ashley

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[REBOL] Re: REBels in Toronto ?

2002-07-16 Thread Andy York

Okay   Any REBOLers in the Raleigh-Durham-Chapel Hill area of Notrh
Carolina?

ay

-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
webmaster
Sent: Monday, July 15, 2002 11:33 PM
To: [EMAIL PROTECTED]
Subject: [REBOL] Re: REBels in Toronto ?


Yes.

I'd be interested to hear what you have in mind.


Kemp Watson wrote:

 Anyone using REBOL in or near Toronto?
 Jus' curious about setting up a local support group...

 - Kemp

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[REBOL] Rebol/Wiki

2002-07-16 Thread Andrew Martin

I've updated my Rebol/Wiki code. You can find it on my
[EMAIL PROTECTED] list and on Rebol/IOS. Or direct from me (with
the most recent bugs...)

Andrew Martin
ICQ: 26227169 http://valley.150m.com/
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