[Chicken-users] chicken-hosted stalin
Hi! A stalin egg has been added to the repository that provides a slightly modified version of Jeffrey Mark Siskinds Stalin Scheme-C compiler, compiled with chicken. Even though the compiler is even slower than the original one, it compiles (the compiler itself) faster and uses less resources (takes for example around 1 1/2 hours on a 512mb Mac Mini (ppc)). It also has a few extensions (more character escape sequences in string literals and SRFI-0 support (cond-expand)). More information can be found here: http://chicken.wiki.br/stalin cheers, felix ___ Chicken-users mailing list Chicken-users@nongnu.org http://lists.nongnu.org/mailman/listinfo/chicken-users
Re: [Chicken-users] chicken-hosted stalin
felix winkelmann scripsit: Even though the [chicken-stalin] compiler is even slower than the original one, it compiles (the compiler itself) faster [...]. This is indecipherable. The purpose of a compiler is to compile; if chicken-stalin compiles the Stalin source code faster than native stalin does, in what sense is it also slower? And if chicken-stalin *is* slower, what is the point of compiling Stalin with csc, since a program that is inherently as slow as Stalin should presumably be compiled with the compiler that produces the fastest executables, viz. native stalin? Also, I'm not clear how much use Stalin is in the Chicken environment, given its severe restrictions on input language. If Stalin could be front-ended with an R5RS macro expander, and if enough bootstrap procedures could be provided that it could understand a larger fraction of Chicken Scheme, then it would indeed be useful to have as an alternative compiler. http://chicken.wiki.br/stalin The link to the Stalin manual is to stalin1html, which is broken. Plausible alternatives like stalin.1.html, stalin1.html, stalin.1, and stalin1 also don't work. -- Clear? Huh! Why a four-year-old child John Cowan could understand this report. Run out [EMAIL PROTECTED] and find me a four-year-old child. I http://www.ccil.org/~cowan can't make head or tail out of it. --Rufus T. Firefly on government reports ___ Chicken-users mailing list Chicken-users@nongnu.org http://lists.nongnu.org/mailman/listinfo/chicken-users
Re: [Chicken-users] chicken-hosted stalin
On Jan 22, 2008 3:45 PM, John Cowan [EMAIL PROTECTED] wrote: felix winkelmann scripsit: Even though the [chicken-stalin] compiler is even slower than the original one, it compiles (the compiler itself) faster [...]. This is indecipherable. The purpose of a compiler is to compile; if chicken-stalin compiles the Stalin source code faster than native stalin does, in what sense is it also slower? And if chicken-stalin *is* slower, what is the point of compiling Stalin with csc, since a program that is inherently as slow as Stalin should presumably be compiled with the compiler that produces the fastest executables, viz. native stalin? chicken-stalin can be built on systems that are too weak to build the regular stalin, it also runs probably on more platforms. I think this is useful. Due to the reduced turnaround times and the much richer runtime environment, one can actually debug and enhance the system (much more so as the original one). Also, I'm not clear how much use Stalin is in the Chicken environment, given its severe restrictions on input language. If Stalin could be front-ended with an R5RS macro expander, and if enough bootstrap procedures could be provided that it could understand a larger fraction of Chicken Scheme, then it would indeed be useful to have as an alternative compiler. You have to see for yourself whether you find it useful. It is possible to mix chicken and stalin code, so one could conceive trying to get the best of both worlds (partially fast code and partically using a rich and dynamic runtime environment). Adding macros and more compiler language support could be done, though. So this is a start. cheers, felix ___ Chicken-users mailing list Chicken-users@nongnu.org http://lists.nongnu.org/mailman/listinfo/chicken-users
[Chicken-users] Help with the mysql egg
Hi,
I am having some trouble with the mysql egg mostly die to my
misunderstanding of c-pointers
With the egg you get data either by index or by name. What I would like
is more something like this example from the mysql-api documentation
unsigned int num_fields;
unsigned int i;
MYSQL_FIELD *fields;
num_fields = mysql_num_fields(result);
fields = mysql_fetch_fields(result);
for(i = 0; i num_fields; i++)
{
printf(Field %u is %s\n, i, fields[i].name);
}
The egg provide the foreign-mysql-fetch-fields. it return a #pointer object
How can I extract the name from this object in scheme?
I want to do what fields[i].name do in the example above?
Thanks
--
BuddyPilots http://www.buddypilots.com
*Jean-Philippe Théberge*
*Programmeur Architecte*
Tel: (514) 353-2307
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Re: [Chicken-users] chicken-hosted stalin
felix winkelmann scripsit: chicken-stalin can be built on systems that are too weak to build the regular stalin, it also runs probably on more platforms. I think this is useful. Due to the reduced turnaround times and the much richer runtime environment, one can actually debug and enhance the system (much more so as the original one). Fair enough. I'm still not clear on whether it is actually slower or faster, though, or perhaps slower in general but faster when compiling Stalin, or what. You have to see for yourself whether you find it useful. It is possible to mix chicken and stalin code, so one could conceive trying to get the best of both worlds (partially fast code and partically using a rich and dynamic runtime environment). Adding macros and more compiler language support could be done, though. So this is a start. Also fair enough. -- John Cowan [EMAIL PROTECTED] http://www.ccil.org/~cowan Most languages are dramatically underdescribed, and at least one is dramatically overdescribed. Still other languages are simultaneously overdescribed and underdescribed. Welsh pertains to the third category. --Alan King ___ Chicken-users mailing list Chicken-users@nongnu.org http://lists.nongnu.org/mailman/listinfo/chicken-users
Re: [Chicken-users] chicken-hosted stalin
John Cowan wrote: felix winkelmann scripsit: Even though the [chicken-stalin] compiler is even slower than the original one, it compiles (the compiler itself) faster. This is indecipherable. I was wondering too what is faster or slower than what! Chichen compiling Stalin to C, vs. Stalin compiling Stalin to C? Gcc compiling Chicken-compiled Stalin to executable, vs. gcc compiling Stalin-compiled Stalin to executable? Chicken-compiled Stalin compiling user code to C, vs. Stalin-compiled Stalin compiling user code to C? I'm probably missing some combination too... LOL Tobia ___ Chicken-users mailing list Chicken-users@nongnu.org http://lists.nongnu.org/mailman/listinfo/chicken-users
Re: [Chicken-users] Chicken blogs
Graham Fawcett wrote: Is anyone else blogging much about Chicken these days? Is the world ready for a Planet Chicken aggregate? When I decided to try out Chicken (and Scheme with it) some months ago, which I'm glad I did, it was because of how well Pythonists and Rubyists and such were talking about Chicken in their blogs at the time. So yes, people have been blogging about it for some time. Tobia ___ Chicken-users mailing list Chicken-users@nongnu.org http://lists.nongnu.org/mailman/listinfo/chicken-users
[Chicken-users] web-unity (was: Web applications)
On Jan 17, 2008, at 9:23 AM, Peter Bex wrote: Instead of making a choice between scgi, fastcgi, spiffy or plain cgi I recommend having a look at the web-unity egg. This egg allows you to write code independent of the webserver/deployment method. $ sudo chicken-setup web-unity The extension web-unity does not exist. Do you want to download it ? (yes/no/abort) [yes] downloading web-unity.egg from (www.call-with-current-continuation.org eggs 80) tar xf ../web-unity.egg tar: This does not look like a tar archive tar: Skipping to next header tar: Error exit delayed from previous errors Error: shell invocation failed with non-zero return status tar xf ../web-unity.egg 512 $ This is with Chicken 2.732 Tobia ___ Chicken-users mailing list Chicken-users@nongnu.org http://lists.nongnu.org/mailman/listinfo/chicken-users
[Chicken-users] Chicken blogs
Hi folks, I just noticed that Hans Nowak, an Pythonista from days of yore, is maintaing a blog about his adventures with Chicken: Drinkable Chicken http://4.flowsnake.org/ Perhaps you might like to pop over and comment on his posts. Is anyone else blogging much about Chicken these days? Is the world ready for a Planet Chicken aggregate? Graham ___ Chicken-users mailing list Chicken-users@nongnu.org http://lists.nongnu.org/mailman/listinfo/chicken-users
Re: [Chicken-users] web-unity (was: Web applications)
Hi, tar xf ../web-unity.egg xfz Groetjes, Peter. ___ Chicken-users mailing list Chicken-users@nongnu.org http://lists.nongnu.org/mailman/listinfo/chicken-users
Re: [Chicken-users] Help with the mysql egg
On Jan 22, 2008, at 6:42 AM, Jean-Philippe Theberge wrote:
Hi,
I am having some trouble with the mysql egg mostly die to my
misunderstanding of c-pointers
With the egg you get data either by index or by name. What I would
like is more something like this example from the mysql-api
documentation
unsigned int num_fields;
unsigned int i;
MYSQL_FIELD *fields;
num_fields = mysql_num_fields(result);
fields = mysql_fetch_fields(result);
for(i = 0; i num_fields; i++)
{
printf(Field %u is %s\n, i, fields[i].name);
}
The egg provide the foreign-mysql-fetch-fields. it return a
#pointer object
How can I extract the name from this object in scheme? I want to
do what fields[i].name do in the example above?
Thanks
I have never used the mysql egg so keep that in mind.
(define conn (mysql-connect ...))
;; (mysql-fetch-field-list DB) - LIST | BOOLEAN
;; Returns a list of field names for the current connection result, or
;; #f when no result.
(define mysql-fetch-field-list
(let ([get-field-name
(foreign-lambda* c-string ([c-pointer fields] [unsigned-
integer idx])
return (((MYSQL_FIELD *)fields)[idx].name);)])
(lambda (conn)
(and-let* ([res (mysql-connection-result conn)])
(let ([fields (foreign-mysql-fetch-fields res)])
(let loop ([count (foreign-mysql-num-fields res)] [names
'()])
(if (zero? count)
names
(let ([nxtcnt (sub1 count)])
(loop nxtcnt (cons (get-field-name fields nxtcnt)
names)) ) ) ) ) ) ) ) )
HTH
--
BuddyPilots http://www.buddypilots.com
*Jean-Philippe Théberge*
*Programmeur Architecte*
Tel: (514) 353-2307
___
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Best Wishes,
Kon
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[Chicken-users] Sedna experiences?
Hi folks, Chicken has a sedna egg, for communicating with a Sedna XML database ( http://modis.ispras.ru/sedna/index.htm ). I was wondering if anyone on the list is using Sedna in a production environment, and might be able to comment on its effectiveness and efficiency? Ultimately, I'm looking for a stable, featureful structured-data store, preferably with full-text search capabilities. Sedna fits the description, but I would be happy to hear of other similar systems you might have used. Regards, Graham ___ Chicken-users mailing list Chicken-users@nongnu.org http://lists.nongnu.org/mailman/listinfo/chicken-users
Re: [Chicken-users] Sedna experiences?
On Jan 22, 2008 10:21 PM, Graham Fawcett [EMAIL PROTECTED] wrote: Hi folks, Chicken has a sedna egg, for communicating with a Sedna XML database ( http://modis.ispras.ru/sedna/index.htm ). I was wondering if anyone on the list is using Sedna in a production environment, and might be able to comment on its effectiveness and efficiency? Ultimately, I'm looking for a stable, featureful structured-data store, preferably with full-text search capabilities. Sedna fits the description, but I would be happy to hear of other similar systems you might have used. I have not used it for real work, and only while helping with an earlier version. It appeared quite stable and in the hands of a someone with DBMS experience it should perform well. But I'm not one of those (personally I can live with plain files, hash-tables and perhaps gdbm). The maintainers are very helpful, I must say. cheers, felix ___ Chicken-users mailing list Chicken-users@nongnu.org http://lists.nongnu.org/mailman/listinfo/chicken-users
Re: [Chicken-users] web-unity (was: Web applications)
On Jan 22, 2008 6:30 PM, Tobia Conforto [EMAIL PROTECTED] wrote: On Jan 17, 2008, at 9:23 AM, Peter Bex wrote: Instead of making a choice between scgi, fastcgi, spiffy or plain cgi I recommend having a look at the web-unity egg. This egg allows you to write code independent of the webserver/deployment method. $ sudo chicken-setup web-unity For reasons unknown to me this egg was missing on the server. It should be there now. Sorry. cheers, felix ___ Chicken-users mailing list Chicken-users@nongnu.org http://lists.nongnu.org/mailman/listinfo/chicken-users
[Chicken-users] advice egg
Hi! Another egg freshly available: advice http://chicken.wiki.br/advice cheers, felix ___ Chicken-users mailing list Chicken-users@nongnu.org http://lists.nongnu.org/mailman/listinfo/chicken-users
Re: [Chicken-users] advice egg
Lordy! Does Felix ever sleep? -M On Jan 22, 2008 3:58 PM, felix winkelmann [EMAIL PROTECTED] wrote: Hi! Another egg freshly available: advice http://chicken.wiki.br/advice cheers, felix ___ Chicken-users mailing list Chicken-users@nongnu.org http://lists.nongnu.org/mailman/listinfo/chicken-users ___ Chicken-users mailing list Chicken-users@nongnu.org http://lists.nongnu.org/mailman/listinfo/chicken-users
Re: [Chicken-users] advice egg
On Jan 22, 2008 11:04 PM, Mark Fredrickson [EMAIL PROTECTED] wrote: Lordy! Does Felix ever sleep? Sleep? I don't have the time for such things. cheers, felix ___ Chicken-users mailing list Chicken-users@nongnu.org http://lists.nongnu.org/mailman/listinfo/chicken-users
Re: [Chicken-users] Help with the mysql egg
OK, I keep in mind that you can easily and succesfully modify an egg you
had never used.
I think this should be added to the mysql egg. I can provide a diff or
add it myself to the egg if I am provided with a repository access.
Thanks a lot!
--
JP Theberge
Kon Lovett wrote:
On Jan 22, 2008, at 6:42 AM, Jean-Philippe Theberge wrote:
Hi,
I am having some trouble with the mysql egg mostly die to my
misunderstanding of c-pointers
With the egg you get data either by index or by name. What I would
like is more something like this example from the mysql-api
documentation
unsigned int num_fields;
unsigned int i;
MYSQL_FIELD *fields;
num_fields = mysql_num_fields(result);
fields = mysql_fetch_fields(result);
for(i = 0; i num_fields; i++)
{
printf(Field %u is %s\n, i, fields[i].name);
}
The egg provide the foreign-mysql-fetch-fields. it return a
#pointer object
How can I extract the name from this object in scheme? I want to do
what fields[i].name do in the example above?
Thanks
I have never used the mysql egg so keep that in mind.
(define conn (mysql-connect ...))
;; (mysql-fetch-field-list DB) - LIST | BOOLEAN
;; Returns a list of field names for the current connection result, or
;; #f when no result.
(define mysql-fetch-field-list
(let ([get-field-name
(foreign-lambda* c-string ([c-pointer fields]
[unsigned-integer idx])
return (((MYSQL_FIELD *)fields)[idx].name);)])
(lambda (conn)
(and-let* ([res (mysql-connection-result conn)])
(let ([fields (foreign-mysql-fetch-fields res)])
(let loop ([count (foreign-mysql-num-fields res)] [names '()])
(if (zero? count)
names
(let ([nxtcnt (sub1 count)])
(loop nxtcnt (cons (get-field-name fields nxtcnt)
names)) ) ) ) ) ) ) ) )
HTH
--
BuddyPilots http://www.buddypilots.com
*Jean-Philippe Théberge*
*Programmeur Architecte*
Tel: (514) 353-2307
___
Chicken-users mailing list
Chicken-users@nongnu.org
http://lists.nongnu.org/mailman/listinfo/chicken-users
Best Wishes,
Kon
--
BuddyPilots http://www.buddypilots.com
*Jean-Philippe Théberge*
*Programmeur Architecte*
Tel: (514) 353-2307
___
Chicken-users mailing list
Chicken-users@nongnu.org
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Re: [Chicken-users] Help with the mysql egg
On Jan 22, 2008, at 2:29 PM, Jean-Philippe Theberge wrote: OK, I keep in mind that you can easily and succesfully modify an egg you had never used. Sorry, not sure what you mean. A compliment? ;-) I think this should be added to the mysql egg. I can provide a diff or add it myself to the egg if I am provided with a repository access. Thanks a lot! You might want to contact [EMAIL PROTECTED], the author. I don't know if he is active with egg maintenance though. -- JP Theberge I forgot to add the following to the code snippet (kinda necessary): # #include mysql.h # Note that the 'foreign-mysql-*' bindings are exported so the 'mysql- fetch-field-list' procedure doesn't need to be part of the egg. Personally I think it a little too specific. Probably a 'define- foreign-record' should be added to the egg for the 'MYSQL_FIELD' struct, this would allow Scheme access to the entries from a pointer. I can look into this if you need it. snip Best Wishes, Kon ___ Chicken-users mailing list Chicken-users@nongnu.org http://lists.nongnu.org/mailman/listinfo/chicken-users
[Chicken-users] Databases in Chicken
I've been slowly evolving a pair of native protocol (direct socket comm, no lib) interfaces for MySQL and Postgres along with some basic schemish functions like (map-query) and (map-for-each). The code is still pretty rough, but as it stabilizes, I was wondering if there's a Chicken equivalent to things like DBI? --Jeremy ___ Chicken-users mailing list Chicken-users@nongnu.org http://lists.nongnu.org/mailman/listinfo/chicken-users
[Chicken-users] Sandbox egg docs missing
Could someone take a look at the documentation for the sandbox egg: http://chicken.wiki.br/sandbox It looks like it is missing. Thanks, Josh ___ Chicken-users mailing list Chicken-users@nongnu.org http://lists.nongnu.org/mailman/listinfo/chicken-users
Re: [Chicken-users] chicken-hosted stalin
On Jan 23, 2008 9:09 AM, John Cowan [EMAIL PROTECTED] wrote: felix winkelmann scripsit: Compilation of Scheme with Stalin takes extremely long. The chicken-compiled Stallin is smaller and doesn't stress gcc so much, but is (naturally) even slower than the original Stalin, which means slow compiling Scheme to C. Well, that's what I expected. But then what is the meaning of saying that there are faster turnaround times for chicken-stalin than for native stalin? I think the relevant point is that there are faster turnaround times for hacking Stalin itself. This is very important, because Stalin is minimal to the point of being unusable, and so a lot of hacking is needed. -- Alex ___ Chicken-users mailing list Chicken-users@nongnu.org http://lists.nongnu.org/mailman/listinfo/chicken-users
Re: [Chicken-users] Sandbox egg docs missing
Hi Joshua, On Tue, 22 Jan 2008 19:44:11 -0600 Joshua Griffith [EMAIL PROTECTED] wrote: Could someone take a look at the documentation for the sandbox egg: http://chicken.wiki.br/sandbox It looks like it is missing. It's at http://www.call-with-current-continuation.org/eggs/sandbox.html Best wishes, Mario ___ Chicken-users mailing list Chicken-users@nongnu.org http://lists.nongnu.org/mailman/listinfo/chicken-users
