World: r3wp

Anyway, I don't want to argue this, you should know about how to 
handle units. Everyone should know that 10 Metres x 10 Metres does 
not equal 100 Metres.

All this is very interesting. I appreciate all of your comments. 
Anyway I have a workaround to the problem. First of all, however, 
I need to tell you why I wanted to be able to convert dollars back 
to rupiahs. It was just to save space in the database. I enter rupiahs, 
as that is the currency I am using right now, but the software converts 
it to dollars and saves the dollar amount to the database. To find 
out the  rupiah amount later if needed, I was going to do a reverse 
conversion. The other solution is to simply record the rupiah amount 
in the database also, so that is what I'll do.

by the way, you may use the conversions on the side of the database 
during select

Oldes, please explain. I do not understand what you mean.

mysql> create table test (dolars float(2));
Query OK, 0 rows affected (0.22 sec)
mysql> insert into test values(777777);
Query OK, 1 row affected (0.03 sec)
mysql> select dolars,(dolars / 9220) as rupias from test;
+--------+-----------------+
| dolars | rupias          |
+--------+-----------------+
| 777777 | 84.357592190889 |
+--------+-----------------+
1 row in set (0.01 sec)

So I could get the reverse conversion I want if I were using mysql?

Right now I'm simply using a rebol object database. It would be very 
difficult to change this particular script. But if I ever do something 
like this again I may consider using mysql.

If you are using Rebol, you should probably use decimals, not money 
datatype

(to store it in the database)

Oldes, yes. I can see that you are right. Store in decimal. Display 
in money.

>> r: 777777
== 777777
>> x: 9220
== 9220
>> d: r / x
== 84.3575921908894
>> d * x
== 777777.0
>> to-money d
== $84.36
>>

I've converted the script to decimal, and it works great!

Decimal is converted to money for reports.

Watch out though - your problem wasn't a decimal vs. money problem, 
it was a rounding problem. If you are going to store the dollar equvalent 
in a database make sure to store it as a floating-point value rather 
than a fixed-point like SQL's decimal type. Otherwise you are going 
to run into the same problem when you store the data and retrieve 
it again.

Yes, I understand this. I think I've done this right. View, however, 
I don't understand.

You and me both.

How do I use the CALL native function to call a external program 
via shell and wait for the program to finish. I try the /wait refinement, 
but it does not work.
* Example: 
call/wait "regedt32 /E C:\backup.reg"

It appears to be something specific to the application being called. 
Both call/wait "cmd" and call/wait "C:\Program Files\rebol\view\rebol.exe" 
worked as expected for me though call/wait "regedt32" didn't.

Regedt32 is returning a 0 completion code to Rebol as it is being 
loaded which Rebol returns from the call:
>> call/wait "C:\Windows\System32\regedt32.exe"
== 0

This suggests that regedt32 is simply a loader for another program.

From http://en.wikipedia.org/wiki/Windows_Registryit seems that 
regedt32.exe invokes regedit.exe.


The page also hints that it may be better to use reg.exe to update 
the registry from a script

Thank you, Peter.

I've just got an Out-Of-Memory error.

Is there any way to have more virtual memory for REBOL to use. In 
Java, I can use command-line options to ask the OS to allocate more 
memory for my app. In REBOL, I have no idea.

on windows?

REBOL should just use all it needs. What are you trying to do?

on windows, the OS should give you all the VM until the OS runs out. 
 I've had REBOL use more than 1 GB of RAM... without doing anything 
special.

(obviously, perfomance drops dramatically... but that's the OS's 
fault)

the machine only had 512MB of physical RAM btw.

I've seen this happen before ... brings windows to a stop :(

you just need to have more VM setup than all apps need... at least 
it wont crash windows.

but like you say... it crawls... on its back.

Jerry, was it a "real" memory error, or where you just trying to 
decompress damaged data?

>> d: compress "jsagkjdsjhgkjdshgkjdhf"
== #{789CCB2A4E4CCFCE4A29CECA00536032230D00688B090D16000000}
>> decompress random  d
** Script Error: Not enough memory
** Near: decompress random d

About the out-of-memory error, the story is ...


I am trying to compare two complete Windows Registry, which are both 
huge. I export them into files (in little-endian 16-bit Unicode), 
which are both 300+ MB. To save the space and to make REBOL easy 
to handle them, I encode these files into UTF-8. they are now 150+ 
MB. I try to load these two UTF-8 files into memory:

>> lines1: read/lines %/c/reg1.reg

== ["Windows Registry Editor Version 5.00" "" "[HKEY_LOCAL_MACHINE]" 
"" ...
>> lines3: read/lines %/c/reg2.reg
== ** Script Error: Not enough memory
** Where: halt-view
** Near: halt 
>> rebol/version
== 1.3.2.3.1

have you tried not using lines?  its pretty easy to chop them up 
after...

not saying /lines has an issue, but I have loaded 700MB ascii files 
on a 1GB RAM computer... 150 is peanuts.  but I never use the /lines 
argument.

you should use the stats to see if something strange is going on. 
 It will give you the amount of RAM REBOL is currently using.

>> stats
== 4432555

There have been some issues with read/lines .  What REBOL version 
are you using? http://www.rebol.net/cgi-bin/rambo.r?sort=1&limit=1&cmd=Search&id=&pattern=read%2Flines

just above he quoted:

 >> rebol/version
== 1.3.2.3.1

[Allen mumbles something about his glasses]

lol  :-)

Without the /line refinement, it takes less memory, and the situation 
is much better. When it reach the 1.28 GB Memory (observed by STATS), 
however, The Out-Of-Memoey Error still happened. Does the 1.28GB-boundary 
have anything to do with my 1GB physical memory?

Is there a way that I can make REBOL recycle the memory? RECYCLE 
seems not to work. Thanks for your help.

strange... are you processing the files in any way? appending.  I 
don't see how loading two 150MB files jumps stats over 1.2GB

there is a possibility that windows does not allow any application 
to allocate more than 1.2GB.  I remember that a 3d application (Maya) 
seemed to crash or freeze when it reached  that amount or RAM IIRC.

recycle will only work if you free all references to data.  you can 
do this by setting any unused global and local vars to none.

Thank you Maxim. I loaded more than two 150MB files into the system 
actually. I did set unused global variables to none, then called 
RECYCLE, but it still not worked. Thanks, anyway.

do you pass the data to functions?

cause functions retain the pointers even if they use local values.

a little shortcomming of the actual function implementation. (which 
I hope will be addressed in R3 )