udodenko's articles:

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circuit minization 6 32 (1/15/2012 12:54:19 PM) comp.theory hi I'm experimenting with calculating a cryptographic hash function (SHA-256) in an unusual way: instead of computing this function in terms of 32-bit words, the way it is defined and is usually implemented,... Captain

1D 16p intDCT-II code wanted 2 32 (7/21/2011 7:07:20 PM) comp.compression I've seen quite a few papers about how authors have built one using lifting and whatnot, but I'm not excited about implementing and debugging it myself. But, surprisingly, not a lot of (C or C++) code is avai... Captain

sign patterns 17 36 (7/20/2011 11:27:09 AM) comp.compression hi I've noticed some interesting patterns in signs of DCT outputs... I've applied DCT to 16-sample blocks of audio signal, computed signum on subset of DCT outputs (e.g. 12-16, 5 most high frequency ones) an... Captain

opposite of remove -- keep? 7 24 (4/18/2011 11:54:19 AM) comp.lang.lisp Consider this example: CL-USER> (remove 3 '((a . 3) (b . 4) (c . 3) (d . 5)) :test #'eql :key #'cdr) ((B . 4) (D . 5)) CL-USER> (remove 3 '((a . 3) (b . 4) (c . 3) (d . 5)) :test (complement #'eql) :key #'c... Captain

arithmetic encoding with rationals 3 33 (2/14/2011 12:46:56 PM) comp.compression hi I'm trying to implement artithmetic coding in a programming language which has built-in support for arbitrary size rational numbers, so my first version is straightforward implementation with rationals. G... Captain

sound compression / backward-adaptive linear prediction 9 158 (7/15/2010 10:53:26 AM) comp.lang.lisp hi I'm experimenting with audio compression, just for fun, -- mostly trying combining different well-known things to see what works. I mostly work with transforms (DCT, DFT, KLT), but it would be intere... Captain

binary trees #2 6 40 (10/16/2009 10:17:29 PM) comp.lang.lisp I'm looking for implementation of binary trees (or any container with similar properties) in Common Lisp which supports following functionality (basically, just like std::map or std::set in C++, or btree in El... Alex

out of memory: a sad case 7 26 (10/23/2008 12:35:03 PM) comp.lang.lisp helo i've made a little research on how good CL implementations deal with out of memory conditions: http://blo.udoidio.info/2008/10/out-of-memory-sad-case.html and, unfortunately, among tested the only one wh... Alex

effective slot definitions 1 25 (9/29/2008 6:34:16 PM) comp.lang.lisp hi i don't get how custom effective slot definitions mechanism is supposed to work by MOP standard. i was able to find only implementation-specific examples, and implementation-agnostic version seems to be da... Alex

lisp debugging 0 54 (9/12/2008 11:18:20 AM) comp.lang.lisp in theory it sort of works, but sometimes, in some implementations at least, it is quite weird. i mean: 0: ((SB-PCL::FAST-METHOD NO-APPLICABLE-METHOD (T)) # # #) 1: ((LAMBDA (SB-PCL::.AR... Alex

udodenko's replies:

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constraint programming 6 26 (10/23/2011 5:54:11 PM) comp.lang.lisp Hi. Can someone recommend a library for constraint programing ? Thanks ... fbogdanovic (89)

Iterate over a struct slots 14 27 (11/22/2011 3:25:36 PM) comp.lang.lisp (defstruct foo (slot1) (slot2) (slot3)) (defvar i0 (make-foo ...)) (defvar i1 (make-foo ...)) Now Suppose I want to merge i1 into i0 using the following rule: for each slot of i0 do if slot is null... nicolas.edel (71)

Newbie in Lisp #2 11 29 (12/7/2011 12:28:37 PM) comp.lang.lisp Hi all, I am a newbie in Lisp and computing in general - have only taken an Intro to C++ class 2 years ago. Am currently interested in learning Lisp after reading Paul Graham's essays on it. This is the curre... caigy84 (7)

Windows API 8 30 (12/8/2011 11:06:01 PM) comp.lang.lisp Have been reading up on Windows API which I understand would be able to help create the "scroll" effect of the mission briefing using something called a "Canvas" object and "Paints and Brushes" --- Does anyone ... caigy84 (7)

Recommendations of other types of Lisp 16 26 (12/20/2011 9:30:54 PM) comp.lang.lisp Hi there, I have begun to learn lisp by using Emacs and I would like to look at branching out a little further and begin writing programs in other types of lisp. I am looking for a general-purpose lisp langua... matthew7508 (5)

PAR2 question 7 43 (12/25/2011 9:25:40 PM) comp.compression I am using Quickpar and have experimented by manually damaging a WAV file to test the limits of PAR2. Obviously, at some point it refuses to repair as it needs one more block. Why can it not just repair the dam... industrial_one (55)

calling sort on list 10 23 (1/6/2012 3:45:58 PM) comp.lang.lisp Hi I was just about to write code that would call sort on a list. Realized that may not be a good thing. Read up the CLHS on sort. It doesn't talk about sort performance on vector versus list. I am guessing t... spam_lisp.linux (88)

ANN: Clojure/West - San Jose, CA - March 16-17 3 27 (1/12/2012 5:57:06 AM) comp.lang.lisp Clojure/West is a new all-Clojure (and ClojureScript) conference. The sessions have been selected and posted on the web site: - http://clojurewest.org/sessions In addition we will have keynotes from Rich Hicke... alex6403 (1)

Rainer Joswig and Hackers 40 41 (1/14/2012 7:17:46 PM) comp.lang.lisp there's something i don't understand about the fucking tech geekers. there's a lisp character, his name is Rainer Joswig. Over the years, we've had our exchange of spats. But to me, usually my mindset is that... xahlee (818)

CMUCL threads on Linux x86: are they lightweight? 6 18 (1/21/2012 12:01:35 AM) comp.lang.lisp Are CMUCL threads on Linux x86 lightweight? Like Gambit or Erlang, I mean. Or are they native, like SBCL? I have not been able to figure it out by reading both CMUCL's documentation and articles citing it, a... rfflrccrd (19)