Hello Graham,
Sunday, December 28, 2003, 10:18:05 PM, you wrote:
GC> Re: Re: DyBASE test
>> New version 0.18 of DyBASE Rebol API is available.
GC> Hi Konstantin,
GC> Can you make it is so that attempting to close a database
GC> twice results in an error rather than a crash?
ok, will be fixed
New version 0.18 of DyBASE Rebol API is available.
Now it is not necessary to specify prototype object: DyBASE is able
to fetch object with arbitrary set of fields. It is possible because
now fetching of object is done in three steps:
1. Fetch object fields into the block
2. Create object using co
Hello SunandaDH,
Sunday, December 28, 2003, 1:18:52 AM, you wrote:
Sac> Konstantin:
>> And once object
>> is created it is not possible to add fields to it (very strange
>> restriction for such flexible and dynamic language as Rebol).
Sac> In simple cases (if the object is not yet referenced
Hello Robert,
Saturday, December 27, 2003, 1:36:17 PM, you wrote:
RMM> On Thu, 25 Dec 2003 20:25:14 +0300, Konstantin Knizhnik
RMM> <[EMAIL PROTECTED]> wrote:
>> Certainly it should be possible to use any word as object field.
>> As I understand from your mail, the p
pdated version 0.17 at my site.
Thursday, December 25, 2003, 6:57:08 PM, you wrote:
RMM> On Tue, 23 Dec 2003 21:54:19 +0300, Konstantin Knizhnik
RMM> <[EMAIL PROTECTED]> wrote:
>> New version of DyBASe 0.17 is available at my site.
RMM> Hi, the db/close bug id gone but I still have
Hello Robert,
Wednesday, December 24, 2003, 2:02:11 PM, you wrote:
RMM> On Tue, 23 Dec 2003 21:54:19 +0300, Konstantin Knizhnik
RMM> <[EMAIL PROTECTED]> wrote:
>> Sorry, stupid bug in storage close method ("func" keyword was missed)
>> cause that problem: da
Hello Robert,
Sorry, stupid bug in storage close method ("func" keyword was missed)
cause that problem: database was not closed and so could not be
reopened. The language constructions should be more protected from
errors:)
New version of DyBASe 0.17 is available at my site.
I has changed (once
but in general ration of performance of
different languages is the same.
Sunday, December 21, 2003, 4:41:53 PM, you wrote:
RMM> On Sat, 20 Dec 2003 21:16:01 +0300, Konstantin Knizhnik
RMM> <[EMAIL PROTECTED]> wrote:
>> I thought, that once objet is created using prototype object, t
Hello Konstantin,
Saturday, December 20, 2003, 9:28:25 PM, you wrote:
KK> Hello Robert,
KK> Saturday, December 20, 2003, 5:47:51 PM, you wrote:
RMM>> On Fri, 19 Dec 2003 13:49:40 +0300, Konstantin Knizhnik
RMM>> <[EMAIL PROTECTED]> wrote:
>>> New optimiz
Hello Robert,
Saturday, December 20, 2003, 5:47:51 PM, you wrote:
RMM> On Fri, 19 Dec 2003 13:49:40 +0300, Konstantin Knizhnik
RMM> <[EMAIL PROTECTED]> wrote:
>> New optimized version of Rebol API to DyBASE is available at
>> http://www.garret.ru/~knizhnik/dybase.
Hello Gregg,
Saturday, December 20, 2003, 8:02:18 PM, you wrote:
GI> Hi Konstantin,
GI> Thanks for your continued efforts! Thanks to your code, and Romano's
GI> detective work, it seems a bug in CLEAR with hash! values may have
GI> been found, which is great!
GI> Also, some of us have talked
Hello Robert,
With the help of Rebol mail list members, I was able to significantly
improve performance of Rebol API. Now the difference with for example
Python, is not so high. I do not believe that it is possible to do
something more in improving performance. Certainly it is possible to
speed u
Hello Romano,
Friday, December 19, 2003, 2:51:19 PM, you wrote:
RPT> Hi,
RPT> Just seem that clear waste hash table, perhaps this is a bug in clear.
Yes, I already noticed it.
So it is much cheaper to create new object than clean existed.
RPT> These are my tests:
>>> i: 10 loop 5 [recy
New optimized version of Rebol API to DyBASE is available at
http://www.garret.ru/~knizhnik/dybase.html
I was managed to increase speed of testindex.r example 4 times by optimizing work with
hash
tables. Unfortunately, the problem is not completely solved and for
large number of cached objects, p
I improve my own "record".
Looks like the best solution (not only for this example) is:
n: 20
h: make hash! 101
cache-size: 101
cache-used: 0
start: now/time/precise
repeat i n [
oid: random n
obj: select h oid
if none? obj [
obj: make object! [__oid__: oid]
if cac
Hello Gregg,
I was able to isolate the problem.
The following script shows almost the same time as testindex.r
searching for 20 objects.
n: 20
h: make hash! n
start: now/time/precise
repeat i n [
oid: random n
obj: select h oid
if none? obj [
obj: make object! [__oid
Hello Konstantin,
Looks there is no profiler in Rebol:(
So, I have to do profiling myself using now/time/precise.
I got the following results which seems to be interesting:
Elapsed time for inserting 10 records: 0:01:01
Elapsed time for performing 20 index searches: 0:02:06
Time spent in
Thank you very much to all who helps me to improve
Rebol API to DyBASE.
I am sorry that somebody treat my concerns about hash tables
in Rebol as criticism of this language.
I already understand that "make hash! 10" is much more efficient
than "make hash! []" and "loop N" is faster than "for 1
Hello Tim,
Wednesday, December 17, 2003, 8:01:14 PM, you wrote:
TJ> * Konstantin Knizhnik <[EMAIL PROTECTED]> [031217 07:26]:
>>
>>
>> Rebol has awful implementation of hash tables.
>> First of all, it is very inconvenient that there are normal set/g
Hello Christian,
Wednesday, December 17, 2003, 7:48:54 PM, you wrote:
>> Compare the following results:
>> Rebol: 18 seconds
CL> h: make hash! 10
CL> start: now/time/precise
CL> for i 1 10 1 [ insert tail h i ]
CL> now/time/precise - start
CL> == 0:00:00.25
O, shame on me - I have t
Hello Gregg,
Wednesday, December 17, 2003, 7:26:41 PM, you wrote:
GI> Hi Konstantin,
GI> First, thanks for completing the REBOL interface to DyBase!
GI> Now, if all the source to it is available, any good folks here who
GI> want to take a crack at improving can do so, right? Hopefully, we can
Hello Konstantin,
Wednesday, December 17, 2003, 7:14:02 PM, you wrote:
KK> Hello Cyphre,
KK> Wednesday, December 17, 2003, 6:40:03 PM, you wrote:
C>> Hi,
C>> I just had a quick look at
C>> http://www.garret.ru/~knizhnik/dybase/doc/dybase.html#comparison . Is Rebol
C>> really so slow or it i
i in range(0,10):
d[i] = i
print 'Elapsed time: ', time.time() - start, ' seconds'
PHP: 1 seconds (rounded)
C> regards
C> Cyphre
C> - Original Message -
C> From: "Konstantin Knizhnik" <[EMAIL PROTECTED]>
C>
ented database, such inefficient implementation of hash table leads
to poor performance of Rebol DyBASE API.
C> regards
C> Cyphre
C> - Original Message -
C> From: "Konstantin Knizhnik" <[EMAIL PROTECTED]>
C> To: <[EMAIL PROTECTED]>
C> Sent: Wedne
Hello all,
First version of Rebol API to my object-oriented database DyBASE is
ready. It can be downloaded from my site:
http://www.garret.ru/~knizhnik/dybase.html
DyBASE is embedded object oriented database for languages with dynamic
type checking. Rebol is fourth language for which DyBASE API
Hello Christian,
Tuesday, December 9, 2003, 10:33:44 PM, you wrote:
>> == make hash! [1 "one" 2 "two"]
h select 1
CL> select h 1
O, sorry - such stupid mistyping:(
I was confused, because
h select "1"
doesn't report any error and returns none...
--
Best regards,
Konstantin
Hello Gregg,
Thank you very much for explanation.
Certainly it is very universal approach to treat everything as
series. But as all universal solutions is is not always convenient to
use:). If I remove exactly one element from the hash - what will be
result of such operation...
But actually I n
Hello Andreas,
Tuesday, December 9, 2003, 5:59:27 PM, you wrote:
AB> Tuesday, December 9, 2003, 12:47:53 PM, Konstantin wrote:
>> Once again sorry for question which may be obvious for experienced
>> Rebol programmers, but how can I
>> 1. Remove pair from hash
AB> remove/part find hash key
Sorry, I am trying to implement Rebol API to my OO database DyBASE and
not yet familiar with Rebol.
I completely confused by lack of normal associative arrays or hashes.
Yes - in Rebol there is hash! type and "select" function makes it
possible to extract values from hash. But I also want to remov
ject mapping.
Thanks in advance
Konstantin
Sunday, December 7, 2003, 12:10:56 AM, you wrote:
VN> Am Samstag 06 Dezember 2003 19:20 schrieb Konstantin Knizhnik:
>> GI> Hi Konstantin,
>>
>> KK>> I am developer of object oriented database for dynamic languages
>&g
GI> Hi Konstantin,
KK>> I am developer of object oriented database for dynamic languages
KK>> (www.garret.ru/~knizhnik/dybase.html)
KK>> Currently it supports PHP, Python and Ruby. Now I am going to develop
KK>> Rebol API for DyBASE.
GI> That's great! I think someone mentioned DyBase here not
Hello Christian,
Thank you very much! "to-set-word" - is what I have missed.
And "prepare" function is exactly what I need.
Saturday, December 6, 2003, 6:37:09 PM, you wrote:
>> I am developer of object oriented database for dynamic languages
>> (www.garret.ru/~knizhnik/dybase.html)
>> Curre
Hello,
I am developer of object oriented database for dynamic languages
(www.garret.ru/~knizhnik/dybase.html)
Currently it supports PHP, Python and Ruby. Now I am going to develop
Rebol API for DyBASE.
I read Rebol manual but some questions are still not clear for me.
Can some Rebol guru suggest
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