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lisp student job offer
Hello everyone, at the german institute for polymers (darmstadt/germany) a friend of mine is looking for a student to work with him in lisp. He uses lisp for 3d image-analysis, some numerics and it is planned to implement a web-application in lisp, too. If you are interested, drop him a mail: rgloeckner#dki:tu... 5 May 2010 08:12
A Collections Framework?
Is there something Comparable ($\ddot\smile$) to the Java Collections Framework in LISP. I use functions like member, union, find, and stuff to design my algorithms but when they are to become productive with huge data sets I will need things like balanced-trees etc. and I don't want to re-invent the wheel. ... 24 May 2010 19:02
scheme problem
This problem involves arithmetic expressions, which may or may not be numbered. You may need to use the following help functions in addition to the buit-in functions including eval which evaluates an arithmetic expression. For example, (eval ‘(+ 1 2)) returns 3. Code: (define (atom? x) (not (list? x))) (define... 7 May 2010 21:09
Rephrasing an English statement into questions.
"JT" <jingtian.yu(a)gmail.com> wrote in message news:d8cc22a8-c03f-45af-ad3a-b5415d2714eb(a)g5g2000pre.googlegroups.com... I know this is not completely related to Lisp, but I know there are a lot of smart people here, so I'm gonna give it a try. I need to write a program that will rephrase an English statem... 4 May 2010 06:47
Shadow in a progn
Hello everyone, I'm trying to write a version of defstruct that shadows the name of the structure and exports the constructor and the slot accessors. The macro I wrote macroexpands into what I expect it to, for instance * (macroexpand-1 '(defstruct-shadow-export lambda slot)) (PROGN (SHADOW 'LAM... 7 May 2010 21:09
Comparing Lisp to Python, what you consider more important:speed or macros.
On Mon, 03 May 2010 16:58:11 +0000, Peter Keller wrote: J Kenneth King <james(a)agentultra.com> wrote: grucidipo <gruzcidol(a)yahoo.es> writes: [snip] I cannot abide the "construct a new language" argument. Macros are a part of Lisp. They don't modify the language of Lisp. They don't creat... 3 May 2010 14:14
Comparing Lisp to Python, what you consider more important:speed or macros.
Captain Obvious wrote: Hk> Um, if you think macros are hard, you don't know Lisp. By definition. If you had some programming experience, you'd know (I'm trying to play same game, you see? Do you find it funny?) You told it wrong. that _sometimes_ writing macros might take quite a lot of effort... 3 May 2010 10:54
need help implementing hooks in Common lisp
I am writing a game and would like a hook implementation. I have most of the groundwork but cannot figure out how to actually insert the hook code into a function. Right now, i have a function (hooks object string), which returns the hooks as a form that looks like ((print x) (+ 2 2)) [the actual form is different... 3 May 2010 19:49
Numbers & Precision
I'm working on an exercise in SICP - improving the square root program in the first chapter. Exercise 1.7, to be precise. In MIT-Scheme, if I define average to be as follows, (define (average x y) (/ (+ x y) 2)) Why are the following incantations not giving me the correct/expected answers? (+ 0.99999999... 9 May 2010 16:30
aserve on Linux anyone? [was Re: Good functional programminghabbit?]
His kennyness wrote: His kennyness wrote: Xah Lee wrote: On May 1, 3:58 pm, "Captain Obvious" <udode...(a)users.sourceforge.net> wrote: XL> if i'd pick on poster's argument that makes the most sense, that'd be XL> Kenny's. Sure, mindless trolls like each other. ... 3 May 2010 02:17
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