from:"Daniel Leslie"

Re: [Chicken-users] New SDL2 eggs; help wanted

2015-11-04 Thread Daniel Leslie

I feel like Alex Charlton might be interested in this Egg.

https://github.com/AlexCharlton

-Dan

On Wed, Nov 4, 2015 at 1:41 PM, Kooda  wrote:

> On Wed, Nov 04, 2015 at 01:35:13PM -0800, Dan Leslie wrote:
> > As a potential user and implementor of similar eggs (Allegro, SOIL, ..
> nanovg), I would provide fairly lean bindings first, then do any
> simplification or hand-holding as an additional module. It will save you
> time in the near term and provide flexibility to the users.
> >
> > -Dan
>
> It seems to already be the case. There is a sdl-internals module used by
> the public sdl2 module.
>
>
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[Chicken-users] ANN: NanoVG egg

2015-11-04 Thread Daniel Leslie

Since it's hot stuff to be announcing new eggs and eggs-in-development, let
me throw my hat in!

I've completed bindings to NanoVG, a wicked-fast vector graphics library
for OpenGL 2, 3, ES2, and ES3; I consider it *unfinished* because I have
yet to complete porting the demo.

Those interested can see the in-progress egg at:
https://github.com/dleslie/nanovg-egg

Thanks!
-Dan
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Re: [Chicken-users] x32 ABI fits Chicken very well

2015-09-01 Thread Daniel Leslie

On Tue, Sep 1, 2015 at 12:53 AM, Peter Bex  wrote:

> This is the same limit that applies to i386,
> which I think is one of the most important limitations of 32 bit CHICKEN.
>

Worth noting is that OpenBSD still supports i386, which is mentioned as a
platform in the wiki:
http://wiki.call-cc.org/platforms#openbsd
http://www.openbsd.org/i386.html

-Dan
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Re: [Chicken-users] unbound variable: or

2015-05-27 Thread Daniel Leslie

'or' is a macro, and macros cannot be used as the first operand in apply.

-Dan

On Wed, May 27, 2015 at 1:25 PM, Jinsong Liang jinsongli...@gmail.com
wrote:

 Hi,

 In Chicken, (apply + '(1 2)) returns 3, which is expected. However, if I
 try:

 (apply or '(#t #f))

 Error: unbound variable: or

 Why (apply or '(#t #f)) does not work?

 Thank you!

 Jinsong

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Re: [Chicken-users] egg names

2015-05-03 Thread Daniel Leslie

Definitely in favour of a rename.

There was an issue recently where a user couldn't install a package that 
dependent on cock but was unable to due to the corporate firewall.

-Dan

Sent from my BlackBerry 10 smartphone.
  Original Message  
From: Peter Danenberg
Sent: Sunday, May 3, 2015 12:59 PM
To: Matt Welland
Cc: chicken-users
Subject: Re: [Chicken-users] egg names

 I accidentally replied direct to Peter in my reply to the
 call-with-environment-variables thread.

That's ok, I CC'd the list; I'm talking to Peter, Moritz and Mario
about a rebranding.

Might do a deprecate, fork, rename kind of thing.

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Re: [Chicken-users] Some syntax help?

2015-05-02 Thread Daniel Leslie

 The incorrect code that CSC allows other things to work on:

This should have stated CSI.

-Dan

On Sat, May 2, 2015 at 8:01 AM, Dan Leslie d...@ironoxide.ca wrote:


 Hi Chickeners!

 Around two weeks ago I received a bug report that the monad egg wasn't
 working in CSC. This turned out to be the result of a syntax error, and
 though I've greatly simplified the syntax and narrowed the issue
 considerably, I find myself stuck in a corner while surrounded by wet
 paint.

 Working branch is here:
 https://github.com/dleslie/monad-egg/tree/compiler-import-bug

 The issue is thus: the egg does some heavy lifting of syntax transforms,
 and there exists a utility such that a user might bind new symbols while
 within the quoted syntax of a stack of transformers. It looks like this:

 (do state
   (/m! put 99)
   (x - (/m get))
   (return x))

 Which would expand to something similar to:

 (state-bind
   (state-put 99)
   (state-bind
 (state-get)
 (lambda (x)
   (state-unit x

 I think; it's early. ;)

 Anyhow, notice that the /m and /m! transforms occur within the do
 syntax; the do syntax transforms through do-using, %unroll-do-using, and
 finally to using; where they're defined dynamically within a quoted
 syntax block.

 Here's the wierdness: this works magnificently in CSI, but fails in CSC.

 Moreover, if I replace /m! with a broken variant then /m works great in
 both CSI and CSC! I know, it doesn't make much sense to me either. My
 best guess is that /m! failing somehow short-circuits a code path in the
 compiler and so allows /m to function as I expect.

 The correct code that CSC breaks on:

 https://github.com/dleslie/monad-egg/blob/compiler-import-bug/monad.scm#L58-L61
 And test output:
 https://gist.github.com/71cc934fbc9fc7fa2d86

 The incorrect code that CSC allows other things to work on:

 https://github.com/dleslie/monad-egg/blob/compiler-import-bug/monad.scm#L63-L66
 And test output:
 https://gist.github.com/d0c276f7ed243d79166b

 Any thoughts would be appreciated. :D

 Thanks!

 --
 -Dan Leslie

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Re: [Chicken-users] Updating the zmq egg

2015-03-09 Thread Daniel Leslie

  Just a thought; but does nanomsg interoperate nicely with protobuf?-DanSentfrommyBlackBerry10smartphone.From: Matt GusheeSent: Monday, March 9, 2015 11:35 AMTo: chicken-users@nongnu.orgSubject: Re: [Chicken-users] Updating the zmq eggFirst of all, thanks to all who responded - especially Thomas, for the extended code example.I think I may use nanomsg after all.On Mon, Mar 9, 2015 at 2:06 AM, Kristian Lein-Mathisen kristianl...@gmail.com wrote:The main reason I wanted to try nanomsg was that it offers Level-triggered Polling.This allows us to do thread-wait-for-i/oon a nanomsg-socket, waiting for a message while other Chicken threads are running. We couldn't solve this with zmq because the zmq_poll C call (just like all C calls) would block the Chicken world.So I discovered. And I'm not sure yet if this will affect my project - it's a great big experiment - but I think there's a significant chance of it.No final decision yet. But I did see that even though nanomsg doesn't appear to have a large community yet, it was created by one of the original 0MQ developers, and seems to have good reasons for existing.--Matt Gushee


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[Chicken-users] Geiser 0.7 Released (Chicken Support!)

2015-02-28 Thread Daniel Leslie

Geiser 0.7 is out, which adds Chicken support!

For those unaware, Geiser adds some slick features to Emacs when editing
Scheme:

   - eldoc support for showing signatures and values of symbols
   - completion-at-point based on symbols bound in the active scheme
   - smart-indenting, module completion, documentation lookup, et cetera

From the NEWS:

* Version 0.7 Freija

  This release is dedicated to Dan's three-months-old daughter Freija,
  who shared her dad's lap with his laptop while he was hacking on the
  new Chicken scheme support for Geiser.

  New features:

   - Chicken support, by Dan Leslie.

  Improved features:

   - `company-mode' support completed with a method for `doc-buffer'.
   - Support for multiple image display in Racket, including image
 objects embedded in structured values (thanks to Greg Hendershott).

To have Geiser work (mostly) as expected, you will need to follow the
Chicken addendum:

* Chicken Addendum
These steps are necessary to fully support Chicken Scheme, but are
not required for any other scheme.

- Install the necessary support eggs:
  $ chicken-install -s apropos chicken-doc
- Update the Chicken documentation database:
  $ cd `csi -p '(chicken-home)'`
  $ curl http://3e8.org/pub/chicken-doc/chicken-doc-repo.tgz | sudo tar zx

Additionally, *be certain that Geiser knows to use Chicken*. You can
check which Scheme is being used by looking at the modeline.

You set the scheme by either:


   - Add a comment like the following at the top of the file:
   ;; chicken
   - Set the geiser active implementations appropriately:
   (setq geiser-active-implementations '(chicken))

The following caveats apply:


   -

   M-. is unavailable. There is no ability to jump to the definition
of a symbol.

   -

   Multiple modules in a single file. I don't know how this would behave.

   -

   Macros lack proper eldoc information, because apropos is unable to
provide the signature for macros.


Geiser is available through MELPA, or on Github.

https://github.com/jaor/geiser/

Enjoy!

-Dan
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Re: [Chicken-users] Status of Slime egg (aka alternatives to default Inferior Scheme mode)

2015-01-31 Thread Daniel Leslie

The slime egg is basically abandoned. The original author bio longer has
time to maintain it and is no longer writing chicken code. I put in some
patches to prop it back up to a point it would execute, but...

(Shameless plugs inbound). There's also alpha-quality support for chicken
in development for geiser, as well as the chicken-scheme.el package.

Chicken itself ships with chicken.el, as well.

https://github.com/dleslie/chicken-scheme.el

https://github.com/dleslie/geiser

I would appreciate feedback for geiser, of you're interested.

-Dan
On 31 Jan 2015 06:12, Bahman Movaqar bah...@bahmanm.com wrote:

 The default Inferior Scheme mode in Emacs is really not the best REPL
 experience possible. I wonder if you people are using slime egg[1] and
 if yes, how do you find it?
 Or are there any other options besides them?

 [1] http://wiki.call-cc.org/eggref/4/slime

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Re: [Chicken-users] Arch User Repository packages

2015-01-09 Thread Daniel Leslie

I've never liked the duplication within the system package manager.
Ensuring Eggs are available and installed could be done as part of the
tools' install script.

-Dan
On 9 Jan 2015 14:40, Alexej Magura agm2...@gmail.com wrote:

  I'd forgotten about tools written in Chicken Scheme; it's a very valid
 point.

  On 01/09/2015 03:39 PM, Aaron Paden wrote:

 I don't think that's quite right. Python also offers similar tools, but
 every Linux distro I've seen also supplies Python packages in their
 repositories. While pip is great for development, when it comes to
 distribution, end-users on Linux still expect to be able to use their
 package manager to install applications, which necessarily requires
 using the package manager to handle dependencies.

 I don't know if there are any traditional Unix-style applications or
 utilities written in Chicken Scheme being distributed to end-users
 currently, but the reason why I'm even checking it out is because it
 does seem better suited to this task than a lot of other Lisp/Scheme
 implementations.

 On Fri, 2015-01-09 at 15:12 -0700, Alexej Magura wrote:

  Yeah, offering eggs via any other method, but chicken-install, is an
 overly complicated and unnecessary solution to a non-existent problem,
 and the solution tends to breed more problems of its own.  Such as:
 how do I check if there's a more recent release for egg XYZ

 I'd send a request to AUR General, IIRC that's the appropriate mailing
 list, and ask them to delete the AUR packages in question.

 On 01/09/2015 03:05 PM, co...@ccil.org wrote:


  IMO, system-specific package libraries should be used only for Chicken
 itself, and eggs should be updated solely by chicken-install.


 --
 Alexej Magura



 --
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Re: [Chicken-users] [Ann] New eggs: Hyperscene and Hypergiant

2015-01-06 Thread Daniel Leslie

I love it!

Than-you for the hard work.

-Dan
On 6 Jan 2015 12:47, Alex Charlton alex.n.charl...@gmail.com wrote:

 Hi Chickeneers,

 I'm happy to announce two new eggs: Hyperscene and Hypergiant.

 Hyperscene is a relatively low-level scene management library that is a
 set of bindings to a C library of the same name.

 Hypergiant uses Hyperscene, and many other eggs, to create a library aimed
 at making games in CHICKEN. Hypergiant itself is mainly a glue library
 which makes it possible to work with OpenGL at a relatively high level of
 abstraction. It *tries* to balance ease of use with extensibility, while
 maintaining an efficient implementation. Beyond working with OpenGL,
 Hypergiant attempts to provide all of the support needed in order to get
 things up and running quickly, while allowing enough flexibility to be
 extensible in any way that you might want.


 If this interests you, check out the docs for these eggs here:

 http://wiki.call-cc.org/eggref/4/hyperscene

 http://wiki.call-cc.org/eggref/4/hypergiant

 I also wrote a tutorial about working with Hypergiant which is probably a
 good starting point:


 http://alex-charlton.com/posts/Prototype_to_polish_Making_games_in_CHICKEN_Scheme_with_Hypergiant/


 In sum, I'm fairly certain that Hypergiant is one of the more novel
 general-purpose game libraries available, and it wouldn’t have been the
 same without the delightful CHICKEN. So many thanks to everyone who's
 helped make this possible!

 Cheers,

 --
 Alex


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Re: [Chicken-users] Happy Christmas

2014-12-24 Thread Daniel Leslie

Happy Holidays from Victoria, Canada!

-Dan

On Wed, Dec 24, 2014 at 4:48 AM, Tim van der Linden t...@shisaa.jp wrote:

 Hi all,

 Thanks Felix.

 Same here from the warm Okinawa, Japan.
 Have a blast this Christmas and best wishes for the next year, to all!

 Cheers,
 Tim

  On 24 Dec 2014, at 21:40, Felix Winkelmann felix.winkelm...@bevuta.com
 wrote:
 
  Hey!
 
 
  I wish all of you a very happy christmas and a blissful new year!
 
 
  felix
 
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Re: [Chicken-users] testing if a symbol has been interned

2014-12-19 Thread Daniel Leslie

You could use the apropos egg to accomplish this.

-Dan

On Fri, Dec 19, 2014 at 10:38 PM, Alexej Magura agm2...@gmail.com wrote:

  In Common Lisp, clisp specifically, you can test whether a symbol has
 been bound, that is interned, or not using boundp; is there a way to do
 this in Chicken?

 (boundp 'a) ; nil
 (defvar a 1)
 (boundp 'a) ; t

 I wrote up a function once a while back that used exception handling to
 check if a symbol had been defined, but if there's already an egg that
 provides this support or if it's built-in, I wanted to know so that I
 wouldn't have to bother trying to rewrite said function.

 --
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Re: [Chicken-users] testing if a symbol has been interned

2014-12-19 Thread Daniel Leslie

Relatedly, is there a tool that can describe *where* a symbol was bound?

-Dan

On Fri, Dec 19, 2014 at 10:45 PM, Kon Lovett konlov...@gmail.com wrote:


 On Dec 19, 2014, at 10:38 PM, Alexej Magura agm2...@gmail.com wrote:

  In Common Lisp, clisp specifically, you can test whether a symbol has
 been bound, that is interned, or not using boundp; is there a way to do
 this in Chicken?

 (boundp 'a) ; nil
 (defvar a 1)
 (boundp 'a) ; t

 I wrote up a function once a while back that used exception handling to
 check if a symbol had been defined, but if there's already an egg that
 provides this support or if it's built-in, I wanted to know so that I
 wouldn't have to bother trying to rewrite said function.


 Look at the symbol-utils egg unbound-value unbound-value? unbound?

 #;1 (use symbol-utils)
 #;2  (unbound? 'foo)
 #t
 #;3 (unbound? '+)
 #f

  --
 Alexej Magura

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Re: [Chicken-users] [ANN] OAuth Egg v0.2 Released

2014-12-18 Thread Daniel Leslie

Ooh, I rather like that talk. Thanks for the eggs!

-Dan
On 18 Dec 2014 09:24, Andy Bennett andy...@ashurst.eu.org wrote:

 Hi everyone,

 I've released v0.2 of the OAuth Egg:

 http://wiki.call-cc.org/eggref/4/oauth


 This release brings support for HMAC-SHA1 signing and a few bug fixes
 when using the 1.0a and RFC 5849 modes.

 This egg has now been verified with at least the APIs of Dropbox and
 Twitter.


 Thanks to Nick Van Horn for reporting some bugs and spurring me into
 action!




 For those of you binding HTTP APIs, you might also be interested in the
 rest-bind egg:

 http://wiki.call-cc.org/eggref/4/rest-bind

 ...and you can complement the documentation with my recent talk about
 the rationale behind it:

 https://www.youtube.com/watch?v=nzS48beMxwo





 Regards,
 @ndy

 --
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 http://www.ashurst.eu.org/
 0x7EBA75FF


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Re: [Chicken-users] What does (let X ...) do?

2014-12-16 Thread Daniel Leslie

It is a named let, details here:
http://www.ccs.neu.edu/home/dorai/t-y-scheme/t-y-scheme-Z-H-1.html#node_toc_node_sec_6.2

-Dan
On 16 Dec 2014 13:58, Bahman Movaqar bah...@bahmanm.com wrote:

 Reading on lazy-seq [1]; what exactly does the following piece of code
 do?

 (let foo ((x 10))
   (* x x))

 TIA,

 [1] http://wiki.call-cc.org/eggref/4/lazy-seq

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Re: [Chicken-users] SRFI-99 - What is a variant type?

2014-12-14 Thread Daniel Leslie

I'll chime in that I also find it a little clumsily written, but that it
reads to me like variant types are, in practice, little more than different
ways of identifying the same data. Which seems like something you could do
with an additional field, but perhaps you aren't interested in exposing any
implementation details of your type to the user and so this sort of
behaviour is desirable.

That said, I've never seen it in use.

-Dan

On Sun, Dec 14, 2014 at 9:58 PM, Bahman Movaqar bah...@bahmanm.com wrote:

 On 12/15/2014 08:38 AM, Alex Shinn wrote:
  This appears to be a chicken-specific extension:
 
  http://www.chust.org/fossils/srfi-99/wiki?name=variant+types
 
  I'm not sure I understand that description, but appears to be
  something like a union type?
 
 

 Thanks for your answer Alex. I didn't understand it either :-)

 
  On Mon, Dec 15, 2014 at 12:12 PM, Bahman Movaqar bah...@bahmanm.com
  mailto:bah...@bahmanm.com wrote:
 
  Reading the docs on SRFI-99 [1], I need some help understanding
  what is
  a variant type. Would someone please pass me a relevant link to
  read?
 

 --
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Re: [Chicken-users] Replace an element in a list

2014-12-13 Thread Daniel Leslie

There are setters for car and cdr, so let's say you're at a position where
you want to replace the head of a list, you can then just do:

(set! (car some-list) some-value)


-Dan

On Sat, Dec 13, 2014 at 3:59 PM, Bahman Movaqar bah...@bahmanm.com wrote:

 What is the idiomatic way of replacing the nth element in a list
 *without* mutating the list? Is the combination of take and
 take-right the right way to do it?
 TIA,

 --
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[Chicken-users] Geiser support teaser

2014-11-28 Thread Daniel Leslie

https://github.com/jaor/geiser/pull/48

;)

-Dan

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[Chicken-users] Working on Geiser integration

2014-11-21 Thread Daniel Leslie

As a follow-up to my earlier inquiries regarding SLIME, I'd like to
notify those who were interested that I've opted to instead work on
Geiser support. The path to full support seems a little easier and,
IMHO, the integration with Scheme is more natural.

AFAICT, previous efforts to support Chicken in Geiser have been
abandoned and never made it much farther than launching the
interpreter. Please inform me if I am mistaken in this regard.

My efforts are here:
https://github.com/dleslie/geiser

Currently, CAPF is working, so by extension I expect ac-geiser works
as well, though I haven't tried yet. I expect to have the bulk of the
remaining work done in the next few weeks, as I have a whole lot of
free time. At the moment there's a three week old little girl wrapped
to my chest, and I've been taking the long night shifts for bottle
feeding which give me plenty of time to hack.

Take care,
-Dan

PS- I cross-posted to chicken-hackers because I believe this is
relevant to those who may be able to provide some advice in sussing
out the internals.

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[Chicken-users] Interest in SLIME?

2014-10-26 Thread Daniel Leslie

I spent some time today looking into what amount of effort it would
take to add swank-trace-dialog support to the existing SLIME egg; it
turns out that it's quite doable, but as I have a slew of projects on
the go I thought I'd gauge if there's any interest outside of my own
inquisitiveness for such an enhancement?

Relatedly, I've been submitting patches to fix errors in the SLIME egg
that have resulted from code rot; so if you're like me and you use the
bleeding edge of Emacs, it should be known that the SLIME egg is sorta
usable once again.

Does anyone know if eldoc support ever functioned with the SLIME egg?

Thanks,
-Dan

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Re: [Chicken-users] Macros and loading compiled code

2014-09-10 Thread Daniel Leslie

I think you need to define the import library when building both test.scm
and test.import.scm. If I do so, your test works:

dleslie@marvin:~$ csc -s test.scm -j test
dleslie@marvin:~$ csc -s test.import.scm -j test
dleslie@marvin:~$ csi

CHICKEN
(c) 2008-2014, The Chicken Team
(c) 2000-2007, Felix L. Winkelmann
Version 4.9.0 (rev 3f195ba)
linux-unix-gnu-x86-64 [ 64bit manyargs dload ptables ]
compiled 2014-06-02 on yves (Linux)

#;1 (import test)
; loading ./test.import.so ...
; loading /var/lib//chicken/7/chicken.import.so ...
#;2 (a-macro 1 2)
3
#;3

-Dan

On Wed, Sep 10, 2014 at 3:26 AM, Richard plui...@freeshell.de wrote:

 On Wed, 10 Sep 2014 00:01:54 -0700
 alex a...@cs.utah.edu wrote:

  Hi,
 
  I defined a macro. I compiled it separately and built it into my main
  program. When my main program calls the load procedure on normal
  Scheme source files, the procedures in these files use the macro
  without complaint.
 
  However, when it loads the dynamic object code created from compiling
  those same source files, I get an error about an unbound value in a
  subexpression of a macro expression. This seems to be because the
  macro expressions are being evaluated as normal procedure
  applications. If I insert the macro definition verbatim into each
  source file before I compile it, the errors do not occur.
 
  I tried passing both the source file and the macro definition file as
  input to the compiler. The errors remain.
  What else can I do to ensure that the dynamic object code knows about
  the macro definition?
 
  --Alex
 
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 Try wrapping a module around the code to be compiled separately.
 Compile it using the '-j module-name' flag then compile the generated
 scheme file: module-name.import.scm

 $ cat test.scm

 (module test
 *
 (import chicken scheme)

 (define-syntax a-macro
   (syntax-rules ()
 ((_ l r) (+ l r

 (define (a-function l r)
   (+ l r))

 )

 compile like so:
 $ csc -s test.scm -j test
 $ csc -s test.import.scm

 use it like so:
 $ csi
 #;1 (load test.so)
 #;2 (import test)
 #;3 (a-function 1 2)
 3
 #;4 (a-macro 1 2)
 3

 I hope this is useful to you,
 greetings,
 Richard



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Re: [Chicken-users] Live programming with Chicken

2014-07-03 Thread Daniel Leslie

Unless I missed a radical change in Chicken, its SRFI-18 threads are green
threads and not real system threads. As a result, blocking operations will
block all threads and no real gain is had from the hardware's support for
multithreading.

Because of those issues I suggest avoiding SRFI-18 threads altogether. They
aren't worth the hassle.

-Dan
On 3 Jul 2014 04:13, Kristian Lein-Mathisen kristianl...@gmail.com
wrote:

 That is strange, I've experienced alex's problem too - having to yield a
 little to give the REPL some room.

 Anyhow, for others who might come across this thread: alex's idea works
 great, but you need to be careful with blocking IO on your REPL. If you
 don't use parley http://api.call-cc.org/doc/parley or something
 similar, chances are that your REPL srfi-18-thread will block your
 srfi-18-game-thread while it's waiting for IO.

 K.


 On Wed, Jul 2, 2014 at 9:07 PM, John Cowan co...@mercury.ccil.org wrote:

 alex scripsit:

  I had some trouble with this last part at first: the original thread
  waited several seconds before evaluating my input. I think that the
  fix was nothing more than calling thread-yield! every loop
  iteration.

 If you are depending on thread-yield! for correctness rather than
 efficiency, you are doing something wrong (but I don't know what).
 SRFI 18 schedulers are not required to be fair in any way.

 --
 John Cowan  http://www.ccil.org/~cowanco...@ccil.org
 He that would foil me must use such weapons as I do, for I have not
 fed my readers with straw, neither will I be confuted with stubble.
 --Thomas Vaughan (1650)

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Re: [Chicken-users] [ANN] glls version 0.3.0

2014-05-31 Thread Daniel Leslie

That is a thing of beauty.

-Dan
On 31 May 2014 07:52, Alex Charlton alex.n.charl...@gmail.com wrote:

 As promised, glls now supports the (optional) automatic generation of
 functions for rendering pipelines. This function generation manifests
 differently depending on whether your file is compiled or evaluated. When
 compiled, rendering functions are compiled to efficient C. When evaluated,
 a generic (not remotely efficient) rendering function is used.

 glls also now provides support for dynamic reevaluating of pipelines in
 such a way that the old program object ID is reused, so that your scene is
 instantly updated.

 Two new examples were added (texture.scm and interactive.scm) to
 illustrate these new features:
 https://github.com/AlexCharlton/glls/tree/master/examples

 And, of course, the documentation describes these changes in detail:
 https://wiki.call-cc.org/eggref/4/glls

 glls is now a rather unique library for shader creation. Not only does it
 provide far tighter integration into the host language than the usual
 method for working with shaders, but it also makes few to zero speed
 sacrifices (when compared to hand-written C) even when the automatically
 generated rendering functions are used. These features were very much born
 out of Chicken’s unique strengths – I really can’t imagine combining them
 in any other language or even Scheme implementation. A big thanks to the
 Chicken team for creating a language and environment where this sort of
 thing is possible!

 --
 Alex


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Re: [Chicken-users] LevelDB bindings

2014-04-20 Thread Daniel Leslie

set-finalizer! Is with considering for memory management as well.
On 20 Apr 2014 16:54, Kristian Lein-Mathisen kristianl...@gmail.com
wrote:


 Hey Caolan,

 And welcome to the Chicken community! Your leveldb eggs seems pretty well
 written, nice work! Not much to comment on, but I'll put down what I noted
 as I quickly browsed through the code.

 Have you looked at the bind egg? It may help you out with basic C++
 bindings for things like class instantiation, methods and fields.

 In your leveldb.setup file, you can use capital -j and leave out the
 module name.

 In you call-with-db definition, you could probably do the same with less
 code using dynamic-wind.

 And a quick note on naming conventions. I noted you've got things like
 strings-slice, where the return value needs to be freed with delete-slice.
 Since that's just private api, I'm sure you'll get away with it. I wonder
 though, if there's a a way to indicate you need to be careful. Perhaps a %
 prefix or * postfix might be suitable.

 Or perhaps a call-with-slice convention that always deletes with
 dynamic-wind might be suitable? I don't know its performance properties,
 though.

 Same for check-status, which deletes its argument with delete-status.
 Perhaps a ! postfix, ie check-status!?

 I hope I can get to play around with leveldb and thus egg at some point!
 Thanks for your contribution!

 K.
 On Apr 20, 2014 3:00 PM, Caolan McMahon caolan.mcma...@gmail.com
 wrote:

 Hi all,

 I'm new to the list (and CHICKEN) *waves*

 I thought I'd have a go at writing an egg and put together some
 bindings to Google's LevelDB embedded key/value store. I've published
 it at https://github.com/caolan/chicken-leveldb

 Can someone please help me with getting it onto the egg index? I'd
 also appreciate any advice people have on coding style / egg layout
 etc. since I'm still getting the hang of this.

 Thanks,

 Caolan

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Re: [Chicken-users] CHICKEN 4.9.0rc1 is available

2014-04-18 Thread Daniel Leslie

Could we get the following C functions exposed to scheme?

C_find_symbol_table
C_enumerate_symbols

Unless I'm mistaken, there's no way to access symbol table information from
scheme at the moment; these two in particular would make tag completion in
my emacs config far, far superior.

-Dan


On Fri, Apr 18, 2014 at 6:12 AM, Mario Domenech Goulart 
mario.goul...@gmail.com wrote:

 Hi,

 The first release candidate for CHICKEN 4.9.0 has been released.  It's
 available at
 http://code.call-cc.org/dev-snapshots/2014/04/17/chicken-4.9.0rc1.tar.gz

 See http://code.call-cc.org/dev-snapshots/2014/04/17/NEWS for the list
 of changes.

 Please, give it a test and report back to the mailing list your
 findings.

 Here's a suggested test procedure:

   $ make PLATFORM=platform PREFIX=some dir install check
   $ some dir/bin/chicken-install pastiche

 If you want to build CHICKEN with a compiler other than the default one,
 just use C_COMPILER=the compiler (e.g., C_COMPILER=clang) on the make
 invocation.

 Of course, feel free to explore other supported build options (see the
 README file for more information) and actually use CHICKEN 4.9.0rc1 for
 your software.

 If you can, please let us know the following information about the
 environment you tested the RC tarball on:

 Operating system: (e.g., FreeBSD 10.0, Debian 7, Windows XP mingw-msys)
 Hardware platform: (e.g., x86, x86-64, PPC)
 C Compiler: (e.g., GCC 4.8.1, clang 3.0-6.2)
 Installation works?: yes or no
 Tests work?: yes or no
 Installation of eggs works?: yes or no

 Thanks in advance.

 The CHICKEN Team
 --
 http://www.call-cc.org

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Re: [Chicken-users] CHICKEN 4.9.0rc1 is available

2014-04-18 Thread Daniel Leslie

Hmm, I already use ##sys#current-environment and ##sys#macro-environment;
but I wasn't aware of ##sys#module-table or ##sys#module-exports.

However, wouldn't it be the case that they wouldn't be much help in a
module-free environment; or are the base units considered in their search?
What I'm thinking is the case of *call/cc*, a symbol missed by my current
process.

-Dan

On 18 Apr 2014 08:13, Mario Domenech Goulart mario.goul...@gmail.com
wrote:

 Hi Daniel,

 On Fri, 18 Apr 2014 08:08:57 -0700 Daniel Leslie d...@ironoxide.ca wrote:

  Could we get the following C functions exposed to scheme?
 
  C_find_symbol_table
  C_enumerate_symbols
 
  Unless I'm mistaken, there's no way to access symbol table information
  from scheme at the moment; these two in particular would make tag
  completion in my emacs config far, far superior.

 Wouldn't something like

 http://call-with-hopeless-continuation.blogspot.com.br/2009/12/introspeccao-de-modulos-em-chicken.html
 do the trick?

 (In portuguese, but I hope the code helps.)

 Best wishes.
 Mario
 --
 http://parenteses.org/mario

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Re: [Chicken-users] CHICKEN 4.9.0rc1 is available

2014-04-18 Thread Daniel Leslie

I'm specifically trying to avoid adding chicken module dependencies to the
elisp. :)

-Dan


On Fri, Apr 18, 2014 at 8:21 AM, Kon Lovett konlov...@gmail.com wrote:


 On Apr 18, 2014, at 8:13 AM, Mario Domenech Goulart 
 mario.goul...@gmail.com wrote:

  Hi Daniel,
 
  On Fri, 18 Apr 2014 08:08:57 -0700 Daniel Leslie d...@ironoxide.ca
 wrote:
 
  Could we get the following C functions exposed to scheme?
 
  C_find_symbol_table
  C_enumerate_symbols
 
  Unless I'm mistaken, there's no way to access symbol table information
  from scheme at the moment; these two in particular would make tag
  completion in my emacs config far, far superior.
 
  Wouldn't something like
 
 http://call-with-hopeless-continuation.blogspot.com.br/2009/12/introspeccao-de-modulos-em-chicken.html
  do the trick?

 The apropos egg also searches the environment. See
 search-system-environment-symbols  the supporting code.

 
  (In portuguese, but I hope the code helps.)
 
  Best wishes.
  Mario
  --
  http://parenteses.org/mario
 
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Re: [Chicken-users] [ANN] New egg: opengl-glew

2014-04-14 Thread Daniel Leslie

FYI, those using the Allegro egg already gain access to most/all gl
extensions:

http://wiki.call-cc.org/eggref/4/allegro/gl

Also, this portion of the Allegro egg was forked out as the glext egg,
though it's poorly documented:

http://wiki.call-cc.org/eggref/4/glext

https://github.com/dleslie/glext

-Dan

On Mon, Apr 14, 2014 at 5:08 AM, Mario Domenech Goulart
mario.goul...@gmail.com wrote:

Hi Alex,

On Sun, 13 Apr 2014 16:12:08 -0400 Alex Charlton
alex.n.charl...@gmail.com wrote:

opengl-glew provides bindings to OpenGL’s core profile while handling
extension loading with GLEW:

https://github.com/AlexCharlton/chicken-opengl-glew

There are two existing eggs that have some degree of overlap with this
one. The opengl egg provides only the older fixed function pipeline
API. OpenGL has changed the majority of its API since then, so it’s
not useful for writing modern graphics programs. The allegro egg
provides some more recent OpenGL bindings (they seem to have been last
updated in 2012), but relies on Allegro which not everyone wants as a
dependency.

opengl-glew uses the widely used GLEW to handle its extension loading,
making this egg immediately useful to most programmers who work with
modern OpenGL. Further, it is guaranteed to always be up-to-date with
the latest OpenGL core profile, because it downloads the glcorearb
header file from opengl.org and uses it to generate its bindings. Some
high-level convenience functions are also provided.

Mario, could you please add this to the egg list:

https://raw.githubusercontent.com/AlexCharlton/chicken-opengl-glew/master/opengl-glew.release-info

Cool. Thanks a lot. I've added your new egg to the coop.

I have a few notes, though. I don't think downloading glcorearb.h at
install time is a good idea. Here are some of the reasons:

* it'll probably make the life for system packagers a bit difficult,
since it'll be hard to have a predictable source code based only on
opengl-glew egg's version. For example, glcorearb.h may change while
opengl-glew is at the same version -- you'd have the same version for
the package, but the source code may be different.

* people that fetch eggs source code to install on systems with no
Internet connection will probably have a hard time installing
opengl-glew.

* opengl-glew relies on wget. AFAIK, it's not available on Windows by
default. I think this dependency should be mentioned on the
documentation (probably in the Requirements section).

Best wishes.
Mario
--
http://parenteses.org/mario

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Re: [Chicken-users] [ANN] New egg: opengl-glew

2014-04-14 Thread Daniel Leslie

Sorry, I just woke up. That was rather terse of me. :)

This is an awesome egg, and I think it's very much needed. The glext egg
never really got off the ground, and Chicken's existing GL library is
sorrowfully lacking in modern features.

Anyhow, thanks for the Egg!
-Dan

On Mon, Apr 14, 2014 at 6:58 AM, Daniel Leslie d...@ironoxide.ca wrote:

FYI, those using the Allegro egg already gain access to most/all gl
extensions:

http://wiki.call-cc.org/eggref/4/allegro/gl

Also, this portion of the Allegro egg was forked out as the glext egg,
though it's poorly documented:

http://wiki.call-cc.org/eggref/4/glext

https://github.com/dleslie/glext

-Dan

On Mon, Apr 14, 2014 at 5:08 AM, Mario Domenech Goulart
mario.goul...@gmail.com wrote:

Hi Alex,

On Sun, 13 Apr 2014 16:12:08 -0400 Alex Charlton
alex.n.charl...@gmail.com wrote:

opengl-glew provides bindings to OpenGL’s core profile while handling
extension loading with GLEW:

https://github.com/AlexCharlton/chicken-opengl-glew

Mario, could you please add this to the egg list:

https://raw.githubusercontent.com/AlexCharlton/chicken-opengl-glew/master/opengl-glew.release-info

Cool. Thanks a lot. I've added your new egg to the coop.

I have a few notes, though. I don't think downloading glcorearb.h at
install time is a good idea. Here are some of the reasons:

* people that fetch eggs source code to install on systems with no
Internet connection will probably have a hard time installing
opengl-glew.

* opengl-glew relies on wget. AFAIK, it's not available on Windows by
default. I think this dependency should be mentioned on the
documentation (probably in the Requirements section).

Best wishes.
Mario
--
http://parenteses.org/mario

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[Chicken-users] Portable installs broken?

2014-04-06 Thread Daniel Leslie

I'm trying to create a 'portable' distribution of chicken and am running
into a simple issue. Basically, the built-in library search path isn't
always valid, and csc and csi don't appear to pay attention to
LD_LIBRARY_PATH.

Thus, the following:

bin $ ./csi -n

CHICKEN

Error: (string-append) bad argument type - not a string: #f

bin $ echo (display \Hello world\) | ./csc - -o foo

Error: (string-append) bad argument type - not a string: #f

Call history:

syntax  (##core#begin (display Hello world))
syntax  (display Hello world)--

Error: shell command terminated with non-zero exit status 17920:
bin/chicken - -output-file foo.c

Alright, so with csi and csc we can get around this by explicitly providing
a -include-path parameter at the command line. But what of installing eggs?
Chicken-install takes no such parameter, and invocations of csc from setup
scripts are not mutable to accept the parameter.

It seems to me that the easy fix would be to import a path from some
environment variable by default. Does such an environment variable exist
already?

-Dan
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[Chicken-users] Chicken 4.8.0.3 failing with Clang 3.2 and 3.4

2014-04-05 Thread Daniel Leslie

I'm not able to build Chicken 4.8.0.3 with clang, either 3.2 or 3.4. GCC
works well. The build fails with the following:

./libchicken.so: file not recognized: File truncated

Invocation:

make -j4 PLATFORM=linux C_COMPILER=clang

System:

uname -a
Linux dleslie-Aspire-5250 3.11.0-12-generic #19-Ubuntu SMP Wed Oct 9
16:20:46 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux


Thanks,
-Dan
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[Chicken-users] Bug fix for bind 1.5.2

2014-03-30 Thread Daniel Leslie

The following should fix passing objects by reference in member functions:

*** ./bind/bind-translator.scm2014-03-30 12:49:46.902558238 -0700
--- ../bind/bind-translator.scm2014-03-30 12:48:47.290262641 -0700
***
*** 1298,1303 
--- 1298,1304 
[('const t) (rec t)]
[('function . _) 'pointer]
[('instance _ c) c]
+   [('instance-ref _ c) c]
[((or 'c-pointer 'ref) x)
 (if io
 (rec x)


I can't take credit for this, I lifted it from here:

https://github.com/kristianlm/chicken-bind/commit/0e093935560069321ff5ecf39382978166f3d28c#commitcomment-5846633

Example of failing code:

echo class Foo {}; class Bar { public: void foo(Foo  foo); };  |
chicken-bind - -o -

-Dan
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[Chicken-users] Another patch for bind 1.5.2

2014-03-30 Thread Daniel Leslie

This adds support for public fields in C++ classes. *Woefully* untested.

IE:
echo class foo { public: float a, b; }; | chicken-bind - -o -

Produces:
;;; GENERATED BY CHICKEN-BIND FROM -

(begin
  (begin (declare (hide g0)) (define-class foo (c++-object) ()))
  (begin
(define g0 (foreign-lambda void delete  (c-pointer foo)))
(define-method (destructor (this foo)) (g0 (slot-value this 'this
  (define foo-a
(getter-with-setter
  (foreign-lambda* float (((c-pointer foo) s)) return(s-a);)
  (foreign-lambda*
float
(((c-pointer foo) s) (float x))
return(s-a = x);)))
  (define foo-b
(getter-with-setter
  (foreign-lambda* float (((c-pointer foo) s)) return(s-b);)
  (foreign-lambda*
float
(((c-pointer foo) s) (float x))
return(s-b = x);)))
  (begin
(declare (hide g1))
(define g1 (foreign-lambda (c-pointer foo) new foo))
(define-method
  (constructor (this foo) initargs)
  (set! (slot-value this 'this) (##sys#apply g1 initargs)

;;; END OF FILE

Patch follows:

diff bind-translator.scm ../t/bind/bind-translator.scm
720,729c720,721
[(('id str) . more)
 (process-member-field-def name rtype (string-symbol str) cb)
 (let field-loop ([more more])
   (match more
  [(('id str) . more)
   (process-member-field-def name rtype (string-symbol str)
cb)
   (field-loop more)]
  [('comma . more) (field-loop more)]
  [_ (parse-member-body more)])
   )]
---
[(('id str) . (or (('op =) . _) ()))
 #f]; member variables are ignored
732,744d723
 (define (process-member-field-def name rtype sym cb)
   (let ([getter (fix-name (string-append (-string name) - (-string
sym)))])
 (let ((g (foreign-transformer
   `(,(rename (if cb 'foreign-safe-lambda* 'foreign-lambda*))
 ,rtype (((c-pointer ,name) s))
 (- s ,sym)) rename))
   (s (foreign-transformer
   `(,(rename (if cb 'foreign-safe-lambda* 'foreign-lambda*))
 ,rtype (((c-pointer ,name) s) (,rtype x))
 (= (- s ,sym) x)) rename)))
   (emit
`(,(rename 'define) ,getter (,(rename 'getter-with-setter) ,g
,s))



-Dan
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[Chicken-users] More work on bind: nested structs, unions and enums in c++11 classes

2014-03-30 Thread Daniel Leslie

The following now create meaningful output:

echo class foo { public: union { float x, y; }; }; | ./chicken-bind - -o -
echo class foo { public: enum { quo, qid }; }; | ./chicken-bind - -o -
echo class foo { public: enum bar { quo, qid }; }; | ./chicken-bind - -o -

I've started a branch on github, the relevant commit is here:

https://github.com/dleslie/chicken-bind/commit/11ddfa36e9af85d31ef0fa32e6086608338e4185

It's also untested; I'm working on binding a (largish) C++ library to
chicken and opted to fix bind rather than do it by hand.

But, I figured some people might like to see the work-so-far.

-Dan
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Re: [Chicken-users] go routines for chicken

2013-11-28 Thread Daniel Leslie

That lays the type safety burden upon the developer at run time and not the
compiler.
On 28 Nov 2013 10:18, Moritz Heidkamp mor...@twoticketsplease.de wrote:

 Daniel Leslie d...@ironoxide.ca writes:

  Go also enjoys a rather robust Channels system, which is sort of like
  Scheme's ports, only it's type-safe by design.

 How are Scheme ports not type-safe? The main difference is that Scheme
 ports are limited to just a single type (i.e. characters) but that
 doesn't make them type-unsafe, no? :-)

 Moritz

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Re: [Chicken-users] go routines for chicken

2013-11-27 Thread Daniel Leslie

Go Routines are much like Chicken's SRFI-18 threads, except that they can
multiplex over multiple *real* threads if one should block.

Go also enjoys a rather robust Channels system, which is sort of like
Scheme's ports, only it's type-safe by design.

Wiki actually has a nice and short break-down on this:
https://en.wikipedia.org/wiki/Goroutine#Concurrency

-Dan


On Wed, Nov 27, 2013 at 1:22 PM, Jörg F. Wittenberger 
joerg.wittenber...@softeyes.net wrote:

 Am 27.11.2013 20:32, schrieb Hugo Arregui:

 On 27/11/13, m...@freeshell.de wrote:

 On a sidenote:

 It seems that there is an analgon to go routines on Erlang, which can be
 accessed the LFE (Lisp Flavoured Erlang). However, that would require to
 learn the entire Erlang VM ecosystem.

 A Lisp Flavoured Erlang, what nice!.


 Having implemented a language inspired by Erlang in LISP (Scheme that is)
 and in a byzantine fault tolerant way atop; I feel from skimming over the
 discussion that I more or less have seen those related problems in
 practice.  However the code I wrote to cope with them is for sure not
 conforming to any pre-defined API.

 Without making any promises (((and having already droped the page titled
 walkthough from this go chan's docs, thus given that go is about as
 great a search term as scheme makes pretty sure that I will not really be
 able to find it back again))): could I you please send me pointers to what
 is considered the canonical documentation of features and requirements a
 go-channel has to solve?  ((I have only so much screen-reading time left
 per day because of my health. I'd rather just use it to code ahead
 instead of digging through stuff from the net.))  However for the same
 health issues I have a little too much spare time  :-/  And as indicated:
 chances are that all I have to do is adapt some already tested code to fit
 the API as per spec.

 let's try

 /Jörg




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Re: [Chicken-users] go routines for chicken

2013-11-22 Thread Daniel Leslie

At present, and to the best of my knowledge, there exists no similar
capacity in Chicken which uses *real* operating system-level
*thread*concurrency.

However, there are numerous eggs that will help with *process*-level
concurrency:

http://wiki.call-cc.org/man/4/Unit%20posix
http://wiki.call-cc.org/eggref/4/scsh-process
http://wiki.call-cc.org/eggref/4/posix-shm
http://wiki.call-cc.org/eggref/4/termite

There's a few more, but their names elude me at the moment. Try asking on
#chicken on irc.freenode.net

-Dan


On Fri, Nov 22, 2013 at 7:22 PM, m...@freeshell.de wrote:

 Hi,

 I recently stumbled over a package for Python that allows to use the
 golang go routines concurrency model (https://github.com/stuglaser/pychan
 ).

 Is there anything comparable in Chicken Scheme? If not, how complicated
 would be to make such an implementation? I understand that Chicken only
 offers very limited threading capability.

 Regards,

   piotr

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Re: [Chicken-users] Chicken for python

2013-11-08 Thread Daniel Leslie

You'd likely just have to wrap the C functions that exist for embedding
Chicken in other apps.

http://wiki.call-cc.org/embedding

http://wiki.call-cc.org/man/4/Embedding

-Dan


On Fri, Nov 8, 2013 at 3:54 PM, m...@freeshell.de wrote:

 Hello all,

 first time post here.

 I decided to give lisp et al. a go and started to dive into functional
 programming. Since I come from a Python background, I wonder if there is a
 chance that one could extend Python with the use of a library compiled by
 Chicken. CHICKEN produces portable and efficient C, so maybe there is a
 way to feed some chickens to the snake?

 For the record, I posted the question at stackoverflow:

 http://stackoverflow.com/questions/19849048/chicken-for-python-extending-python-with-the-use-of-a-shared-library

 Any opinions, ideas, comments?

 Cheers!




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Re: [Chicken-users] bind egg and strings

2013-02-15 Thread Daniel Leslie

Thanks :)

-Dan

On Fri, Feb 15, 2013 at 2:54 AM, Felix 
fe...@call-with-current-continuation.org wrote:

 From: Daniel Leslie d...@ironoxide.ca
 Subject: Re: [Chicken-users] bind egg and strings
 Date: Tue, 12 Feb 2013 13:25:22 -0800

  Can someone with a little more core knowledge please comment on this?

  I'm also curious as to whether this test case will eventually result in
 an
  OOB error due to foreign reliance on GC-controlled memory.

 It does. I will look into this.

 cheers,
 felix

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Re: [Chicken-users] bind egg and strings

2013-02-12 Thread Daniel Leslie

Can someone with a little more core knowledge please comment on this?

I'm also curious as to whether this test case will eventually result in an
OOB error due to foreign reliance on GC-controlled memory.

-Dan


On Sun, Feb 10, 2013 at 11:04 PM, Andrei Barbu and...@0xab.com wrote:

 Attached is a trivial patch that does the strdup.


 Andrei


 On Sat, Feb 9, 2013 at 6:07 PM, Andrei Barbu and...@0xab.com wrote:
  Hi,
 
 
  I've been using the bind egg and encountered some strange behaviour.
  I have:
 
  struct a {
char *b;
  };
 
  Bind generates:
 
  (begin
(define a-b
  (foreign-lambda* c-string (((c-pointer (struct a)) s))
 return(s-b);))
(define make-a
  (foreign-lambda*
(c-pointer (struct a))
((c-string b))
struct a *tmp_ = (struct a *)C_malloc(sizeof(struct
  a));\ntmp_-b = b;\n\nC_return(tmp_);)))
 
 
  It seems to me that make-a is guaranteed to eventually lead to an out
  of bounds memory access because of:
   tmp_-b = b
  b is a c-string and will be GCed as soon a the foreign-lambda* returns.
  This is further exacerbated when using -mutable-fields making it
  impossible to set any char* member.
  Shouldn't the bind egg be doing an strdup here? Is there a way to get
  it do so? Or am I missing something?
 
 
  Thanks!
  Andrei

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Re: [Chicken-users] ANN: persistent-hash-map 0.0.1

2013-02-12 Thread Daniel Leslie

Very much appreciated, thanks!


On Sun, Feb 10, 2013 at 3:31 PM, Moritz Heidkamp mor...@twoticketsplease.de
 wrote:

 Fellow Chickeneers,

 I have finally gotten around to finishing my long standing plan of
 porting the useful persistent hash map data structure from Clojure to
 Chicken. Thankfully, ClojureScript grew its own implementation of it in
 the meantime which written (mostly) in ClojureScript itself so porting
 was way easier than with the original Java implementation. But first,
 let me explain why this data structure is so nice. In a nutshell it
 allows you to program in a functional style like you are used to with
 lists in Scheme. As you know, SRFI 69 style hash tables don't lend
 themselves very well to this style because they are mutable. Thus we
 Schemers often resort to alists when we need associative data structures
 which is fine in many cases but has (at least) two drawbacks:

 1) Lookup, deletion, and insertion are fairly expensive operations of
O(n) complexity. This can be circumvented by converting the alist
into a hash table once it is finished but this requires a fair
amount of copying. Also, from this point on you lose the (de facto)
immutability of the alist which allowed you to program in a
functional way. So now you have to deal with all the challenges of
mutable state again. In conclusion you can't have your cake and eat
it, too.

 2) Alists are not of a distinct type so you can't for example dispatch
or specialize on them. The closest approximation of a type predicate
is of O(n) complexity, too, as it would require to walk the whole
list to check whether all elements are indeed pairs. This is also an
issue with serialization and deserialization as their external
representation is indistinguishable from a list of pairs.

 In practice these drawbacks are usually not much of an issue but it
 strikes me as a kludgy work-aroundish state of affairs. I want to use a
 proper data structure when dealing with associative data without
 compromising programming convenience! And this is where persistent hash
 maps come into play. In essence they work like alists without the
 drawbacks mentioned above:

 1) Lookup complexity is practically constant and contrived benchmarks
show that performance is comparable to SRFI 69 hash tables. Insertion
and deletion is around O(log(n)). As an optimization the
implementation allows to turn a persistent map into a so called
transient map which can be mutated. This allows for efficient batch
modification. Later it can be turned back into a persistent map
without any copying.

 2) Maps are implemented as a distinct type. What's currently missing is
an external representation but this can easily be added, e.g. by
means of a SRFI 10 reader extension.

 In a way, persistent hash maps give you the best of alists and hash
 tables combined which is why I highly recommend you to check them
 out. The egg's documentation can be found at the usual place
 (http://wiki.call-cc.org/eggref/4/persistent-hash-map), the source code
 lives at https://bitbucket.org/DerGuteMoritz/persistent-hash-map.  There
 are almost certainly still some bugs in the implementation, especially
 in edge cases. I'm happy to receive bug reports if you happen to run
 into those!

 With regards to the implementation I would like share a few
 tidbits. Since I wanted to achieve decently performing code I took this
 project as an opportunity to give Felix' programming for performance
 guide a try (http://wiki.call-cc.org/programming-for-performance). It
 was really helpful in reaching this goal, so thanks Felix for taking the
 time to write it up! My findings are as follows:

 The original ClojureScript (and Clojure) implementation uses types to
 represent different kinds of nodes. For those types several generic
 functions (protocol methods in Clojure lingo, see
 http://clojure.org/protocols) are defined. I wanted to keep this
 structure in my port so as to not diverge all too far from the original
 implementation. That way I hope to be able to integrate upstream patches
 in the future more swiftly. To that end I tried coops and fast-generic
 (as recommended in the guide) and found that coops yields slightly
 smaller compiled code (about 210K versus 244K with fast-generic) while
 fast-generic's dispatch is about an order of magnitude faster. The catch
 is that fast-generic types are only visible inside the compiled module
 but in this case this doesn't matter because the generic functions are
 completely internal to the implementation so I decided to go with
 fast-generic. The types themselves are represented as Scheme records. I
 tried both the typed-records and the record-variants extensions. It
 turned out that typed-records yielded slightly better performance than
 record-variants with all declarations enabled (unsafe, unchecked,
 inline). The typed-records may have additionally benefited from
 pervasive type

Re: [Chicken-users] ANN new eggs for Amazon S3, SendGrid, and Stripe

2013-01-30 Thread Daniel Leslie

Very cool, thank-you!

-Dan


On Wed, Jan 30, 2013 at 3:40 PM, Thomas Hintz t...@thintz.com wrote:

 The Stripe card processing page can be found here:
 https://a.keeptherecords.com/sign-up/payment/basic. The homepage is
 http://keeptherecords.com, which is wordpress. The app, written in
 chicken scheme, is http://a.keeptherecords.com. (goto /demo if you want
 to check it out).


 On Wed, Jan 30, 2013 at 3:35 PM, Christian Kellermann ck...@pestilenz.org
  wrote:

 * Thomas Hintz t...@thintz.com [130131 00:26]:
  You're welcome. :)
 
  Also, I just noticed that Stripe is now available in Canada as well. If
 you
  are in Canada or the US and want to take credit card payments or handle
  recurring payments, I highly highly recommend Stripe. No need for a
  merchant account, gateway setup, or storing of any sensitive
 information.
  Once I built the api it only took a few minutes for me to sign up,
  integrate it into my site, and start processing cards.

 Now I am really curious: Can you tell me the URL of your site?

 This is an awesome amount of work, thank you!

 Cheers,

 Christian

 --
 In the world, there is nothing more submissive and weak than
 water. Yet for attacking that which is hard and strong, nothing can
 surpass it. --- Lao Tzu



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Re: [Chicken-users] Egg: redis bindings

2013-01-24 Thread Daniel Leslie

Relatedly, has anyone updated the old memcached egg?

Considering that MySQL 5.6 brought in a NoSQL memcached
APIhttp://dev.mysql.com/tech-resources/articles/whats-new-in-mysql-5.6.html#nosqlthis
may prove to be of some use.

-Dan


On Wed, Jan 23, 2013 at 7:27 PM, richo ri...@psych0tik.net wrote:

 On 23/01/13 20:59 -0500, Andrei Barbu wrote:

 Hi,

 I put up an egg that has high-performance redis bindings using
 hiredis. It's much faster (100x)  than the current egg and it doesn't
 suffer from timeout issues. Provides a pretty bare-bones API.

 I've put up docs on the wiki:
 https://wiki.call-cc.org/**eggref/4/redishttps://wiki.call-cc.org/eggref/4/redis

 And the egg is available from:
 https://github.com/abarbu/**redis-chickenhttps://github.com/abarbu/redis-chicken

 Could someone make this accessible via chicken-install? Thanks!

 I'd also appreciate if someone had a look at the
 meta/release-info/setup files and let me know if I'm doing something
 inappropriate.


 Awesome,

 I wrote a small library that's current backed onto either flat files or
 redis
 at the deployers option, I'll have a play with this in the evening!

 Cheers

 Richo

 --
 richo || Today's excuse:

 The monitor is plugged into the serial port
 http://blog.psych0tik.net

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Re: [Chicken-users] Egg: redis bindings

2013-01-24 Thread Daniel Leslie

Never mind, the qwiki search didn't show the /4/ egg when I searched for
memcache, but it does appear to exist:

https://wiki.call-cc.org/eggref/4/memcached

-Dan


On Thu, Jan 24, 2013 at 10:12 AM, Daniel Leslie d...@ironoxide.ca wrote:

 Relatedly, has anyone updated the old memcached egg?

 Considering that MySQL 5.6 brought in a NoSQL memcached 
 APIhttp://dev.mysql.com/tech-resources/articles/whats-new-in-mysql-5.6.html#nosqlthis
  may prove to be of some use.

 -Dan


 On Wed, Jan 23, 2013 at 7:27 PM, richo ri...@psych0tik.net wrote:

 On 23/01/13 20:59 -0500, Andrei Barbu wrote:

 Hi,

 I put up an egg that has high-performance redis bindings using
 hiredis. It's much faster (100x)  than the current egg and it doesn't
 suffer from timeout issues. Provides a pretty bare-bones API.

 I've put up docs on the wiki:
 https://wiki.call-cc.org/**eggref/4/redishttps://wiki.call-cc.org/eggref/4/redis

 And the egg is available from:
 https://github.com/abarbu/**redis-chickenhttps://github.com/abarbu/redis-chicken

 Could someone make this accessible via chicken-install? Thanks!

 I'd also appreciate if someone had a look at the
 meta/release-info/setup files and let me know if I'm doing something
 inappropriate.


 Awesome,

 I wrote a small library that's current backed onto either flat files or
 redis
 at the deployers option, I'll have a play with this in the evening!

 Cheers

 Richo

 --
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 The monitor is plugged into the serial port
 http://blog.psych0tik.net

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Re: [Chicken-users] Askemos again; this time bad news. Needs some support/donation.

2013-01-24 Thread Daniel Leslie

To fix the case I rather urgently need to find at least two locations,
where I dare to replicate my notes wrt. to my personal privacy. One
already secured; so one more whom I can trust not to embarrass me by
leaking info taking as a remembrance to myself. Preferable outside
Germany.

Are you saying that you require access to a physical server outside of
Germany, on which you may bootstrap instances of Askemos to act as
replication peers?

If so, I'm sorry to say that I'm stuck on a slow residential cable line and
haven't the cash to spare for the continuous operation of a server. Between
my wife's tuition and the mortgage, we're rather tight for cash.

-Dan

On Wed, Jan 23, 2013 at 1:32 PM, Jörg F. Wittenberger
joerg.wittenber...@softeyes.net wrote:

Hello $all,

we've been recently in touch regarding Askemos. Now I might need
some help, if you can.

Until Wed, 23 Jan 2013 15:55:00 +0100 the Askemos cloud ran on
a rather healthy mix of peers.

Pardon me? }:-| ??? …

On Jan 18 2013, Daniel Leslie wrote:

A little off-topic for this list, but it comes up now and then so I'll
dive into it. Every time Askemos comes up I get a deep curiousity that has
me exclaiming What is this thing?! Especially after perusing pages like
this one http://askemos.org/**Ad60e3fb123a79b2e5128915116b28**
8f7/index.html/?_v=footnote_**id=1223http://askemos.org/Ad60e3fb123a79b2e5128915116b288f7/index.html/?_v=footnote_id=1223
.

…

And, erm, what are the minimal steps for bootstrapping a server which can
collaborate on this *ethical cloud*?

…An almost healthy mix, that is. For historic reasons three of
those eight peers of the development network, which originally where
at different locations, ended up behind a single point of failure. Since
the system promises fail-stop, I can't even add a note into my blog.

Given the trouble I expect more. In case of trouble: all URL's
given here would/could/should be served from several locations.
*IF* the URL after the askemos.org part starts with an
A[0-9a-f]{32} path step, just replace the prefix with
any other replica and retry. Odds are 5:8.

For hosts still visible see appendix.
So find the reference cited above under
http://login.softeyes.net/**Ad60e3fb123a79b2e5128915116b28**
8f7/index.html/http://login.softeyes.net/Ad60e3fb123a79b2e5128915116b288f7/index.html/
or it's alternatives while I'm fixing the DNS etc.

@Ian Grigg and Allison Stellíng: the same applies to the not-so-private
message I just sent out minutes before the disaster happend. Find the
one-pager-message wrt. system theory under hash code:
A5ae3c14013b6fe38b4aa66a2697e0**97f that would be e.g.
http://login.softeyes.net/**A5ae3c14013b6fe38b4aa66a2697e0**97fhttp://login.softeyes.net/A5ae3c14013b6fe38b4aa66a2697e097for
http://peanut.softeyes.net:**7080/**A5ae3c14013b6fe38b4aa66a2697e0**97fhttp://peanut.softeyes.net:7080/A5ae3c14013b6fe38b4aa66a2697e097f[the
latter being a plug computer at home only].

I just wanted to add a forgotten note beneath the TC DISCLAIMER
http://cl.softeyes.net:8080/**A5ae3c14013b6fe38b4aa66a2697e0**
97f/Systems%20in%20Genetic%**20Autopoesishttp://cl.softeyes.net:8080/A5ae3c14013b6fe38b4aa66a2697e097f/Systems%20in%20Genetic%20Autopoesis

This: The hypothesis wrt. cancer would be that the strict rule
*no communication along the diagonal* where shortcut.
Leading into a 'thermodynamic chaos'.

When those three peers disappeared.

## The Needs - Short Term

To fix the case I rather urgently need to find at least two
locations, where I dare to replicate my notes wrt. to my personal
privacy. One already secured; so one more whom I can trust
not to embarrass me by leaking info taking as a remembrance to
myself. Preferable outside Germany.

## Minimum requirements

BALL became a bit like the Swiss-army knife wrt. small scale
ISP needs not having a solutions widely deployed for a reason.

For operation it needs to bind to a port at the moment.
Run as some isolated user it needs to be able to maintain the
contents of one directory.

## Participate - Long Term

The more parties joining the network, the better it should help
with privacy, safety and autonomy.

### Regarding the Healthiness

So far we had

♣: AMD64, i386, ARM

♠: Chicken, Rscheme

♡: FreeBSD, Linux

♢: GPL, BSD

for symbols see A5ae3c14013b6fe38b4aa66a2697e0**97f , the
not so private draft message.

Thanks for your time.

/JFW

## Hosts Still Visible

http://login.softeyes.net
http://isstvan.softeyes.net:**7080/ http://isstvan.softeyes.net:7080/
http://cl.softeyes.net:8080/
http://peanut.softeyes.net:**7080/ http://peanut.softeyes.net:7080/

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Re: [Chicken-users] Some questions about loading libraries

2013-01-18 Thread Daniel Leslie

What's the *goal* for Askemos? Is it a passion project or is there a bigger
picture in mind?

And, erm, what are the minimal steps for bootstrapping a server which can
collaborate on this* *ethical cloud?

Thanks Jörg!
-Dan

On Fri, Jan 18, 2013 at 2:52 AM, Jörg F. Wittenberger
joerg.wittenber...@softeyes.net wrote:

Hi Matt,

I know you've been asking quite a different question.

But judging from your aimsgoals, maybe it's worth to look at
ball.askemos.org ; runs on chicken and rscheme. (see
http://ball.askemos.org/**DevelopmentNetworkhttp://ball.askemos.org/DevelopmentNetwork)

It might save you quite some work and bring in at least one more
developer being with you.

Beware: it took quite a while for a genious like Ian Grigg
(see
http://www.askemos.org/index.**html?_v=search_id=1275http://www.askemos.org/index.html?_v=search_id=1275)
to understand that this would be a version of his Ricardo
applicable to running processes instead of static documents.

However I've been ask by a Chemist to provide her with an
account on my network for her to organize her notes in the
way askemos.org works. *After* she watched me adding content
from the tablet. And both, her brother and ex-boyfriend
are CS guys… she kinda knows what she needs and doesn't.

Best Regards

/Jerry

PS: sorry for the shameless plug
.

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[Chicken-users] New Egg: Tween

2013-01-12 Thread Daniel Leslie

Hi all,

I've just finished up the first version of my Tween egg. It provides a
(loose) port of Tween.js for Scheme. The functionality that tracked tween
state is not present, as I felt that's better left to the client of the API
and wasn't very much in the tradition of scheme, but otherwise it's
functionally intact.

For those unaware, tweening is the action of 'inbetweening' two values; of
which the popular linear interpolation is a common action. This egg
provides a whole suite of interesting tweens, including the classic lerp.

It also provides linear, bezier, and catmull-rom interpolation functions.

Anyhow, please see the wiki for more information:
https://wiki.call-cc.org/eggref/4/tween

If someone could prop this to the coup so it can be installed via
chicken-install I would be grateful, thanks!

-Dan
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Re: [Chicken-users] Chicken-users Digest, Vol 122, Issue 5

2013-01-07 Thread Daniel Leslie

http://mingw-w64.sourceforge.net/

Mingw-w64 is proclaimed to be stable, if you're interested in 64-bit builds.

-Dan


On Mon, Jan 7, 2013 at 10:23 AM, Răzvan Rotaru razvan.rot...@gmail.comwrote:

 Hi,

 It contains the latest stable chicken version (4.8.0). Currently this is
 visible only in the filename of the installer (chicken-4.8.0.exe). I will
 think of putting it also somewhere in the wizard steps.

 The chicken build is 32-bit, but it runs ok on Windows 7 64-bit. (The same
 applies to mingw).

 Razvan


 On 7 January 2013 19:00, chicken-users-requ...@nongnu.org wrote:


 On Mon, Jan 07, 2013 at 12:01:01PM +0200, R?zvan Rotaru wrote:
  Hi,

 Hi!

  I have made a windows installer for chicken. You can get it from
 
  https://bitbucket.org/roti/chicken-installer/downloads
 
  It includes the MinGW GCC compiler. I would appreciate any feedback if
  there are windows users out there who choose to use it.

 This is great, thanks for putting in the effort.  It would help if you
 stated which version of Chicken it is exactly, since the 4.8.0 release
 is known not to build under Windows 64-bit AFAIK.

 Please note there's a 4.8.0.1 in the works which will fix a few of
 these issues.

 Cheers,
 Peter
 --
 http://sjamaan.ath.cx



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Re: [Chicken-users] Announcing chicken-announce

2013-01-04 Thread Daniel Leslie

Will the content be duplicated to any of the other lists?


On Fri, Jan 4, 2013 at 3:09 PM, Felix 
fe...@call-with-current-continuation.org wrote:

 Hello!


 A new mailing list for announcements related to CHICKEN has been
 created (cleverly named chicken-announce) and will receive from now
 on important news like new releases of the core system, extensions,
 applications, and everything we (and you!) like to scream out into the
 ether...

 To subscribe, please visit:

   https://lists.nongnu.org/mailman/listinfo/chicken-announce


 cheers,
 felix

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Re: [Chicken-users] happy christmas!

2012-12-24 Thread Daniel Leslie

Happy Saturnalia! ;)

Hope everyone is having a wonderful time with friends and family.

-Dan


On Mon, Dec 24, 2012 at 9:15 AM, Arthur Maciel arthurmac...@gmail.comwrote:

 Happy Christmas to all!

 -- Mensagem encaminhada --
 From: Felix fe...@call-with-current-continuation.org
 To: chicken-users@nongnu.org
 Cc:
 Date: Mon, 24 Dec 2012 12:56:46 +0100 (CET)
 Subject: [Chicken-users] happy christmas!


 I wish everybody a very happy christmas !


 cheers,
 felix




 -- Mensagem encaminhada --
 From: Hugo Arregui hugo.arre...@gmail.com
 To: Felix fe...@call-with-current-continuation.org
 Cc: chicken-users@nongnu.org
 Date: Mon, 24 Dec 2012 11:37:52 -0300
 Subject: Re: [Chicken-users] happy christmas!
 Happy Chrismas for everyone!

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Re: [Chicken-users] A mfeta-observation

2012-11-25 Thread Daniel Leslie

I've noticed some folks have been pimping Chicken on Reddit whenever it's
topical. Many of those targetted seem to be looking for a powerful
lisp-like language with an acceptable license for commercial work and a
friendly, active community; Chicken fits that niche rather nicely.

Or perhaps it's because of the prominent Schemes that have been
historically active; Chicken and Racket are really the only two that have
substantial third-party module repositories?

-Dan
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Re: [Chicken-users] Much improved customized Emacs

2012-11-23 Thread Daniel Leslie

Thanks!

I appreciate the testing. WorksForMe usually doesn't cut the mustard, so
your feedback is quite welcome.

I fixed a few of the derps that was causing Marmalade to have issues; happy
hacking!

-Dan


On Fri, Nov 23, 2012 at 2:26 AM, Kristian Lein-Mathisen 
kristianl...@gmail.com wrote:


 Hi Dan,

 This is great work!

 I too work in constrained environments, mostly on mobile phones, so I'm
 really looking forward to use your package. I had some problems installing
 it through marmelade so I added a couple github issues.

 K.


 On Fri, Nov 23, 2012 at 3:40 AM, Daniel Leslie d...@ironoxide.ca wrote:

 I've released an Emacs package that encompasses the customizations I've
 made to the base scheme-mode. This is a heavy iteration on the work
 previously present on the wiki.

 It provides:
 - Syntax support for all presently installed modules, both bound symbols
 and macros.
 - Chicken-doc support where documentation exists (including a C-? binding
 to lookup the word-at-point).
 - Support for font-locking of the above.
 - Automatic loading of a defvar'd etag file, if you wish.
 - Auto-Complete and Font Locking of *prefixed* *symbols*; IE, if you
 imported Allegro with the prefix al: *then al:draw-triangle will have
 the draw-triangle portion correctly coloured and auto-completed*!

 Most importantly, and the itch that drove this endeavour, *this is all
 provided independent of a running REPL*.

 For those of us who tend to work on more unstable/low-level code that is
 prone to killing the REPL the higher-level functionality of the various
 scheme modes are frustratingly inconsistent at best. Now without the need
 for an active REPL we can enjoy full syntax highlighting, auto-completion
 and documentation.

 Now, there is one outstanding annoyance that I'd like to field the
 mailing list for suggestions on. At present, all symbols found via *
 ##sys#macro-environment* and *##sys#environment-symbols# *are given the
 font-lock-builtin-face.

 I'd like to know what's best not to include at all, and hear some
 suggestions on how best to divide up the rest. Right now it feels like that
 font-locking is a little *too* aggressive.

 And perhaps the one negative: in order to provide these features without
 the REPL a cache is built when scheme-mode is first loaded. I *highly* 
 recommend
 you run Emacs from a daemon if you use this extension, so as to avoid
 unnecessarily recaching.

 That, or you can customize the *chicken-ac-modules* variable to just
 load the 'chicken' module and there will be nary a hitch, though far less
 completions.

 Anyhow, further details are available on the wiki:
 https://wiki.call-cc.org/dans-custom-emacs

 Thanks,
 -Dan

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Re: [Chicken-users] using flymake with chicken

2012-11-23 Thread Daniel Leslie

Oh excellent!

You may be able to remove the need for the shell script by running
something like:

(shell-command-to-string (format csi -SAv \%s\ || true option-or-filename))

Thanks,
-Dan


On Fri, Nov 23, 2012 at 11:05 AM, Felix 
fe...@call-with-current-continuation.org wrote:

 Hello!


 Attached is a first go at flymake[1] support for Scheme code.
 It is derived from flymake-lua.el and very simple.

 Put chicken-flymake in your PATH, make it executable, load
 flymake-chicken.el
 into your emacs, open some .scm file and do

   M-x flymake-chicken-mode

 Now, lines containing scrutinizer warnings (and other errors that show
 a line number) are highlighted.

 I have not used this seriously yet, but it's sort of weirdly cool ...

 I have added the code to the git repository (see the scripts and misc
 subdirectories).

 Suggestions are welcome.


 cheers,
 felix

 [1] http://www.emacswiki.org/emacs/FlyMake

  flymake for CHICKEN

 ;; Taken from:
 ;; https://github.com/sroccaserra/emacs/blob/master/flymake-lua.el

 ;;
 ;; Flymake for Lua
 ;;
 ;; Usage:
 ;; (require 'flymake-lua)
 ;; (add-hook 'lua-mode-hook 'flymake-lua-load)
 ;;
 ;; Note: litterally stolen from Steve Purcell's Flymake Ruby.
 ;; See
 http://github.com/purcell/emacs.d/blob/master/site-lisp/flymake-ruby/flymake-ruby.el
 ;;

 (require 'flymake)

 (defgroup flymake-chicken nil
   Flymake Chicken Customizations)

 (defcustom flymake-chicken-program chicken-flymake
   How to invoke csc.
   :type 'file
   :group 'flymake-chicken)

 (defun flymake-create-temp-in-system-tempdir (filename prefix)
   (make-temp-file (or prefix flymake-chicken)))

 (defun flymake-chicken-init ()
   (list flymake-chicken-program
 (list (flymake-init-create-temp-buffer-copy
'flymake-create-temp-in-system-tempdir

 (defvar flymake-chicken-allowed-file-name-masks
   '((\\.scm\\' flymake-chicken-init)))

 (defvar flymake-chicken-err-line-patterns
   '(( *(\\(.+\\):\\([0-9]+\\)) *
  1 2)
 (\\(Error\\|Warning\\|Note\\): *(line \\([0-9.]*\\))
  nil 2)))

 ;(defvar flymake-lua-err-line-patterns
 ;  '((^.*luac[0-9.]*\\(.exe\\)?: *\\(.*\\):\\([0-9]+\\): \\(.*\\)$
 ;2 3 nil 4)))

 ;;;###autoload
 (defun flymake-chicken-mode ()
   (interactive)
   (when (and (not (null buffer-file-name)) (file-writable-p
 buffer-file-name))
 (set (make-local-variable 'flymake-allowed-file-name-masks)
 flymake-chicken-allowed-file-name-masks)
 (set (make-local-variable 'flymake-err-line-patterns)
 flymake-chicken-err-line-patterns)
 (flymake-mode t)))

 (provide 'flymake-chicken)

 #!/bin/sh
 #
 # usage: chicken-flymake OPTION-OR-FILENAME ...

 csc -SAv $@ || true

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[Chicken-users] Much improved customized Emacs

2012-11-22 Thread Daniel Leslie

I've released an Emacs package that encompasses the customizations I've
made to the base scheme-mode. This is a heavy iteration on the work
previously present on the wiki.

It provides:
- Syntax support for all presently installed modules, both bound symbols
and macros.
- Chicken-doc support where documentation exists (including a C-? binding
to lookup the word-at-point).
- Support for font-locking of the above.
- Automatic loading of a defvar'd etag file, if you wish.
- Auto-Complete and Font Locking of *prefixed* *symbols*; IE, if you
imported Allegro with the prefix al: *then al:draw-triangle will have the
draw-triangle portion correctly coloured and auto-completed*!

Most importantly, and the itch that drove this endeavour, *this is all
provided independent of a running REPL*.

For those of us who tend to work on more unstable/low-level code that is
prone to killing the REPL the higher-level functionality of the various
scheme modes are frustratingly inconsistent at best. Now without the need
for an active REPL we can enjoy full syntax highlighting, auto-completion
and documentation.

Now, there is one outstanding annoyance that I'd like to field the mailing
list for suggestions on. At present, all symbols found via *
##sys#macro-environment* and *##sys#environment-symbols# *are given the
font-lock-builtin-face.

I'd like to know what's best not to include at all, and hear some
suggestions on how best to divide up the rest. Right now it feels like that
font-locking is a little *too* aggressive.

And perhaps the one negative: in order to provide these features without
the REPL a cache is built when scheme-mode is first loaded. I *highly*
recommend
you run Emacs from a daemon if you use this extension, so as to avoid
unnecessarily recaching.

That, or you can customize the *chicken-ac-modules* variable to just load
the 'chicken' module and there will be nary a hitch, though far less
completions.

Anyhow, further details are available on the wiki:
https://wiki.call-cc.org/dans-custom-emacs

Thanks,
-Dan
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Re: [Chicken-users] spock tests

2012-09-07 Thread Daniel Leslie

Both are fairly swift for me. OSX, Chrome Version 21.0.1180.89

-Dan

On Fri, Sep 7, 2012 at 3:01 PM, Felix 
fe...@call-with-current-continuation.org wrote:

 Hello!

 There has been a new version of Spock (0.9) (that Scheme-JS compiler
 thingy) that uses a slightly changed unwinding strategy (return
 instead of throw), which promises better compatibility with stupid
 browsers and flaky JS engines.

 If you have a minute, please point your browser to

   http://www.call-with-current-continuation.org/spock/test.html

 and

   http://www.call-with-current-continuation.org/spock/threads.html

 The former takes quite a while to run, the latter needs canvas
 support.  I tested with Conkeror 0.9.1 and Firefox 3.6.3, which seem
 to run both tests OK. I would be very interested to see whether these
 work or fail for you, and on which browsers (IE in particular).


 cheers,
 felix

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Re: [Chicken-users] IUP

2012-07-13 Thread Daniel Leslie

Getting IUP working outside of Windows was a bit of a headache for me, too.

IIRC, along with ffcall you'll need to install:
http://sourceforge.net/projects/imtoolkit/
http://www.tecgraf.puc-rio.br/cd/
http://www.tecgraf.puc-rio.br/iup/

This page is somewhat helpful in getting CD to build:
http://www.tecgraf.puc-rio.br/cd/en/download_tips.html

Good luck!
-Dan

On Fri, Jul 13, 2012 at 4:06 PM, Andy Bennett andy...@ashurst.eu.orgwrote:

 Hi,

 I'm trying to use the iup egg.

 I had some trouble with chicken-install because I didn't have ffcall,
 but that's resolved now.

 I persuaded iup itself to install into /usr/local/ rather than /usr/ and
 added -I/usr/local/include/iup/ to the compile calls in the iup.setup
 file.

 Now, when I try to (use iup) in csi I get this:

 -
 #;1 (use iup)
 ; loading /usr/local/chicken-4.7.0/lib/chicken/6/iup.import.so ...
 ; loading /usr/local/chicken-4.7.0/lib/chicken/6/iup-base.import.so ...
 ; loading /usr/local/chicken-4.7.0/lib/chicken/6/lolevel.import.so ...
 ; loading /usr/local/chicken-4.7.0/lib/chicken/6/srfi-42.import.so ...
 ; loading /usr/local/chicken-4.7.0/lib/chicken/6/irregex.import.so ...
 ; loading /usr/local/chicken-4.7.0/lib/chicken/6/iup-controls.import.so...
 ; loading /usr/local/chicken-4.7.0/lib/chicken/6/iup-dialogs.import.so ...
 ; loading /usr/local/chicken-4.7.0/lib/chicken/6/iup.so ...

 Error: (load) unable to load compiled module - libim.so: cannot open
 shared object file: No such file or directory:
 /usr/local/chicken-4.7.0/lib/chicken/6/iup.so

 Call history:

 syntax  (quote iup)
 syntax  (##core#quote iup)
 syntax  (import iup)
 syntax  (import scheme chicken (except iup-base
 ihandle-pointer pointer-ihandle ihandle-list-pointer-vect..
 syntax  (import scheme chicken foreign lolevel
 data-structures extras srfi-1 srfi-13 srfi-42 irregex (only p..
 syntax  (import scheme (except chicken :) srfi-1)
 syntax  (##core#undefined)
 syntax  (##core#undefined)
 syntax  (import scheme chicken foreign iup-base)
 syntax  (##core#undefined)
 syntax  (import scheme chicken foreign iup-base)
 syntax  (##core#undefined)
 syntax  (##core#undefined)
 syntax  (##core#undefined)
 syntax  (##core#undefined)
 eval(##sys#require (quote iup))   --
 #;1
 -

 I don't seem to have libim.so anywhere on my system, and it doesn't seem
 to be part of the iup distribution that I installed
 (iup-3.6_Linux26g4_64_lib.tar.gz).


 Does anyone have any ideas where libim.so is supposed to come from?



 Regards,
 @ndy

 --
 andy...@ashurst.eu.org
 http://www.ashurst.eu.org/
 0x7EBA75FF


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Re: [Chicken-users] ANN: simple-graphics, a basic turtle graphics library for educational purposes

2012-07-08 Thread Daniel Leslie

Fantastic!

I, for one, am happy to see more and more multimedia eggs for Scheme.

Thanks!
-Dan

On Sun, Jul 8, 2012 at 2:42 PM, Alaric Snell-Pym ala...@snell-pym.org.ukwrote:


 Hello folks,

 As my six-year-old is interested in making computers do things, but
 showing her how to do sums in csi grew old after half an hour or so, I
 built on Christian's fine work in the doodle egg (which handles all the
 evil bits for me) and wrote a very simple turtle graphics library.

 The goal is simplicity and immediate gratification; all setup of
 graphical context is done on demand when the user starts drawing pictures.

 https://wiki.call-cc.org/**eggref/4/simple-graphicshttps://wiki.call-cc.org/eggref/4/simple-graphics

 It can be improved in many ways; mainly, I want to put a little turtle
 sprite that rotates to show the turtle direction, but I need C-Keen to
 finish his work on doodle sprites first! However, I'd also like to
 provide more upwards paths to more advanced work, like integration
 with the doodle event loop and so on.

 I'd also like to lay down better infrastructure for drawing charts from
 numerical data, perhaps with a draw-to alongside go-to, line
 thickness, etc.

 However, it'll do for now!

 Enjoy,

 ABS

 --
 Alaric Snell-Pym
 http://www.snell-pym.org.uk/**alaric/http://www.snell-pym.org.uk/alaric/

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[Chicken-users] Monad Egg updated, lots of docs added

2012-07-04 Thread Daniel Leslie

Please see the Wiki for complete details:
https://wiki.call-cc.org/eggref/4/monad

In short: some time ago I fleshed out the available monads with various
utility functions that are generally excepted as being available for them.
In the process I wrote a slew of usage examples, which should help those
trying to understand what they're for and how they're used.

Have at it!
-Dan
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[Chicken-users] Allegro Egg 1.3 available

2012-07-02 Thread Daniel Leslie

The Allegro Egg version 1.3 is now available.

The major noteworthy change is the addition of the Allegro OpenGL
Extensions. This provides GLEW-like OpenGL extension support to all
supported platforms. Developers will now be able to use the Allegro
bindings to write non-fixed pipeline OpenGL applications entirely withing
Scheme.

Please see the Wiki page for more information:
https://wiki.call-cc.org/eggref/4/allegro

-Dan
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Re: [Chicken-users] Gl Extentions?

2012-06-22 Thread Daniel Leslie

And... I should be just about done the first pass. Bind is so awesome.

-Dan

On Thu, Jun 21, 2012 at 10:01 AM, Daniel Leslie d...@ironoxide.ca wrote:

 Hi all,

 I started working on an egg to supplement the existing OpenGL support with
 what can be found in glext.h, however, I thought I'd drop in here for a
 moment and see if anyone has already begun this work? I've made some head
 way personally, but before I proceed further I thought it to be best to see
 if I'm duplicating effort.

 Thanks!
 -Dan

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[Chicken-users] Gl Extentions?

2012-06-21 Thread Daniel Leslie

Hi all,

I started working on an egg to supplement the existing OpenGL support with
what can be found in glext.h, however, I thought I'd drop in here for a
moment and see if anyone has already begun this work? I've made some head
way personally, but before I proceed further I thought it to be best to see
if I'm duplicating effort.

Thanks!
-Dan
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Re: [Chicken-users] Emacs and Chicken on Windows

2012-06-02 Thread Daniel Leslie

FYI, I've updated this script. It's now far, far faster than it was. That
is to say, there's no longer a completion delay on my netbook.

-Dan

On Tue, Apr 3, 2012 at 8:06 PM, Daniel Leslie d...@ironoxide.ca wrote:

 Perhaps of some interest is the work I've put into my Emacs scripts for
 Chicken.

 I've had consistent problems with SLIME and Chicken on Windows, which may
 or may not be the result of my (heavily) modified Emacs environment.
 Moreover, on my Ubuntu netbook SLIME is just a little too sluggish for my
 tastes; when all I really want is auto-complete completions as I type away
 on a shaky bus ride.

 As such, I wrote some scripts to use chicken-status and csi to produce a
 list of available bindings from your installed modules and the base chicken
 environment, and it in turn produces an auto-complete source. It also
 provides font-locking for these symbols.

 Anyhow, more info is on the wiki:
 http://wiki.call-cc.org/dans-custom-emacs

 Likewise, I occasionally do some work on Eggs which involves a lot of
 intermixed C and Scheme in the same source file. Here's my (ugly)
 multi-mode hack to do C and Scheme major modes in the same buffer:
 http://wiki.call-cc.org/emacs-multi-mode

 Thanks for Chicken!
 -Dan

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Re: [Chicken-users] Unit ports documentation needs an example or two for non-gods

2012-05-23 Thread Daniel Leslie

I'm personally not aware of any eggs that specifically match your request.
But there are these eggs, which I tend to use more often than others:

Misc Macros http://wiki.call-cc.org/eggref/4/miscmacros
More Macros http://wiki.call-cc.org/eggref/4/moremacros
lookup-table http://wiki.call-cc.org/eggref/4/lookup-table
Sequences http://wiki.call-cc.org/eggref/4/sequences
SRFI-99 http://wiki.call-cc.org/eggref/4/srfi-99

Less general, but still often useful:
SRFI-45 http://wiki.call-cc.org/eggref/4/srfi-45
lazy-seq http://wiki.call-cc.org/eggref/4/lazy-seq

-Dan

On Wed, May 23, 2012 at 6:35 AM, Matt Welland estifo...@gmail.com wrote:

  (port-map FN THUNK)

 where does the port go?

 I was sort of hoping for something like this to work:

 csi (define inp (open-input-file ~/.bashrc))
 csi (define a (port-map inp read-line))
 csi (close-input-file inp)

 but it took guessing to figure out the intended usage. How about some
 trivial examples in the docs?

 By trial and error I figured this out:

 (define a (with-input-from-file ~/.bashrc (lambda ()(port-map (lambda
 (x) x) read-line

 That is ugly. I just want to get a file into a list:

 E.g. in Ruby:  foo=`cat ~/.bashrc`

 port-fold doesn't improve it:

 (define b (with-input-from-file ~/.bashrc (lambda ()(reverse (port-fold
 cons '() read-line)

 Is there an egg or unit for down-n-dirty, get-the-job-done-yesterday,
 screw the right thing programming?

 (use ducttape)
 (define a (file-list ~/.bashrc))
 

 Such a unit or egg deserves mention on the front page. I dug though the
 docs and never did find an easy way to do what I want.

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[Chicken-users] [ANN] Allegro Egg

2012-04-03 Thread Daniel Leslie

I've finished up the bindings for the Allegro egg. Or, at least, I believe
I have 99% API coverage and I've tested most of it. Native dialog hooks
still remain to be implemented.

Documentation is present here:
http://wiki.call-cc.org/eggref/4/allegro

It's BSD3 licensed, in a similar manner to the base library.

*What is Allegro?*

Allegro has been around since the days of the Amiga, and was one of the
first open-source game development libraries widely available. Those of
us who grew up with DOS machines in the 90s may remember using it with
DJGPP.

Recently Allegro underwent a *complete* rewrite, alowing the developers to
switch from the original giftware license to one that allowed for
commercial redistribution of derivative works without requiring the
redistribution of code. Likewise, it allowed them to greatly streamline the
API and focus on modernization and efficiency.

I noticed that the new API lent itself fairly well to a scheme programming
style, and a few months of bus-trip programming later this Egg was born.

Anyhow, I welcome bug fixes, github pull requests, and documentation
updates; provided contributors are willing to stick with the distribution
license I have chosen.

Thanks for Chicken!
-Dan Leslie
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[Chicken-users] Emacs and Chicken on Windows

2012-04-03 Thread Daniel Leslie

Perhaps of some interest is the work I've put into my Emacs scripts for
Chicken.

I've had consistent problems with SLIME and Chicken on Windows, which may
or may not be the result of my (heavily) modified Emacs environment.
Moreover, on my Ubuntu netbook SLIME is just a little too sluggish for my
tastes; when all I really want is auto-complete completions as I type away
on a shaky bus ride.

As such, I wrote some scripts to use chicken-status and csi to produce a
list of available bindings from your installed modules and the base chicken
environment, and it in turn produces an auto-complete source. It also
provides font-locking for these symbols.

Anyhow, more info is on the wiki:
http://wiki.call-cc.org/dans-custom-emacs

Likewise, I occasionally do some work on Eggs which involves a lot of
intermixed C and Scheme in the same source file. Here's my (ugly)
multi-mode hack to do C and Scheme major modes in the same buffer:
http://wiki.call-cc.org/emacs-multi-mode

Thanks for Chicken!
-Dan
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