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World: r3wp

[Core] Discuss core issues

Geomol
23-Feb-2006
[3544]
Pekr, I'll write you privately, so you can see the NicomDB in action 
in a real application.
Pekr
23-Feb-2006
[3545]
ok, thanks ...
Anton
23-Feb-2006
[3546x3]
Example



PRINT  (global)

In the most recent Rebol/Core 2.6 (date)
First appeared in Rebol/Core 0.005 alpha (date)
[History]



Passed all 12 unit tests on [30 versions of rebol]. (See [unit tests])


---------------------------

PARSE  (global)

In the most recent Rebol/Core 2.6 (date)
First appeared ...
[History]



Passed all 34 unit tests on [14 versions of rebol]. (See [unit tests])
Ok, created a new Qtask Rebol SIG task, with many notes extracted 
from this discussion in its description. Sitll pretty messy, but 
it's a start.
http://www.qtask.com/details.cgi?project=198&id=38061
Having done that, I can't spend much time on it now ! :-(  But it's 
good to get some of these ideas written down, and a few things worked 
out.
Geomol
23-Feb-2006
[3549]
It's been a while, since I last used Qtask. Do I need special permission 
to see that project?
Anton
23-Feb-2006
[3550x2]
I think you just need to login before you visit that url. Did you 
have trouble accessing it ?
(Or maybe a Lead such as Reichart needs to approve the task first 
? That might take some time...)
Geomol
23-Feb-2006
[3552x2]
Yes, I don't have permission.
Reeeeiiiichart! It's Anton and John caaaalling! ;)
yeksoon
23-Feb-2006
[3554]
u don't?

I think you are on REBOL SIG.
JaimeVargas
23-Feb-2006
[3555x4]
Look at the regression tests implemented in Orca they already cover 
a lot of behaviour.
http://trac.geekisp.com/orca
They can serve as a base to implement the full unit test for Rebol, 
and save time.
If you download the src code the paths is user-path/orca/trunk/orca/tests/
Robert
23-Feb-2006
[3559x2]
Isn't there a regression test "suite" for Rebol programs? IIRC someone 
made something like this.
Or was it unit-testing...
JaimeVargas
23-Feb-2006
[3561]
I believe there is a Unit Test framework. But no rebol specific regression 
tests have been written. At least not publicly.
Anton
23-Feb-2006
[3562x2]
Geomol, are you able to login to Qtask still ?

Reichart has approved/released the task, so all I need to do is add 
interested people as watchers.
I see "John" in qtask and added him as a watcher. (I assume that's 
you Geomol). I can add anybody else in qtask who is interested as 
watchers too.

(Geomol, you will need to accept becoming a watcher first, then you 
should be able to see the page.)
PeterWood
23-Feb-2006
[3564]
Carl used to wax lyrically about the automated Rebol test suite that 
Jeff (Kreis) wrote when he was at RT. As far as I know it was never 
publicly available.
Geomol
24-Feb-2006
[3565x2]
Anton, I have access to the project on Qtask now.
and yes, I'm John in Qtask.
Anton
25-Feb-2006
[3567]
Ah, very good.
Graham
25-Feb-2006
[3568x2]
>> foreach f read %synapse-chat/ [ ?? f either dir? f [ print [ "directory: 
" f ]][print ["file: " f] ]]
f: %April/
file:  April/
f: %Compkarori/
file:  Compkarori/
this has me somewhat confused.
Volker
25-Feb-2006
[3570x2]
Does still?
read returns pathless filenames.
Graham
25-Feb-2006
[3572]
but you can see that the trailing slash is preserved ...
Volker
25-Feb-2006
[3573x2]
it checks by os-call, not filename.
missing things count as as non-dirs too.
Graham
25-Feb-2006
[3575x2]
foreach f read %./ [ print [ "directory? " dir? f ]]

So, why does this work?
because it's in the current directory ?
Volker
25-Feb-2006
[3577x2]
yes. "dir? %synapse-chat/April/" would work too.
foreach f read dir: %synapse-chat/ [ ?? f either dir? dir/:f [ print 
[ "directory: " f ]][print ["file: " f] ]]
Graham
25-Feb-2006
[3579]
I guess the lesson is that you need to remember where you are when 
doing these things.
Anton
26-Feb-2006
[3580]
It's faster to check for final slash than to use DIR?, which, as 
Volker pointed out, makes an OS call.
Graham
26-Feb-2006
[3581]
Yeah, I moved to doing that.
Geomol
27-Feb-2006
[3582]
This is from the REBOL command prompt under Mac OS X. Does REBOL 
behave the same under other OSs?
>> 31-12-16383
== 31-Dec-16383
>> 1-1-16384  
** Syntax Error: Invalid date -- 1-1-16384
** Near: (line 1) 1-1-16384
>> d: 1-1-0000
== 1-Jan-0000
>> d - 1
== 31-Dec-65535
Henrik
27-Feb-2006
[3583]
Windows:

>> 31-12-16383
== 31-Dec-16383
>> 1-1-16384
** Syntax Error: Invalid date -- 1-1-16384
** Near: (line 1) 1-1-16384
>> d: 1-1-0000
== 1-Jan-0000
>> d - 1
== 31-Dec-65535
Geomol
27-Feb-2006
[3584x2]
The Gregorian Reformation occured in September 1752. This is output 
from the UNIX 'cal' command:
$ cal 9 1752
   September 1752
 S  M Tu  W Th  F  S
       1  2 14 15 16
17 18 19 20 21 22 23
24 25 26 27 28 29 30

Notice the jump from 2. to 14. Sep.!
And then some REBOL:
>> d: 2-9-1752
== 2-Sep-1752
>> d + 1
== 3-Sep-1752


Seems like the reformation didn't occur in REBOL-land. Maybe that 
should be noticed in the wikibook, Henrik?
Henrik
27-Feb-2006
[3586]
it probably should. could you put it in? I'm a little strained for 
time
Geomol
27-Feb-2006
[3587x2]
Also there is no year 0. So this is not absolutely correct:
>> 1-1-0000
== 1-Jan-0000
The year before year 1 is year -1 (or 1 BC).
I'm wondering, how REBOL handle leap year...
Henrik
27-Feb-2006
[3589]
strange that this year was picked, since the gregorian reformation 
didn't happen everywhere at once
Geomol
27-Feb-2006
[3590x2]
yeah, this is from UNIX 'man cal':

The Gregorian Reformation is assumed to have occurred in 1752 on 
the 3rd

     of September.  By this time, most countries had recognized the reforma-

     tion (although a few did not recognize it until the early 1900's.)
So most countries did.
Henrik
27-Feb-2006
[3592]
but would it be good/bad for rebol to support it? what if you are 
calculating astronomical data or similar
Geomol
27-Feb-2006
[3593]
It seems, REBOL handle leap years correctly. The rule is, that every 
4. year is a leap year. Every 100 year isn't a leap year though, 
unless it's divided by 400. So 2000 was a leap year, 1900 wasn't, 
but 1600 was. And so on.