Lisp

Is my function set-property-in-list any good
I made a function to set a property in a list. My definition is that when the property not already exists that it is an error. (I have to make also a function create-property-in-list.) There needs to be more error checking: are property-1 and property-2 really keywords, and it has to be made more general (now it wo... 23 Dec 2009 10:50

Mathematica emulation
Lisp developers are wanted for a project to build a Mathematica emulator using the Maxima computer algebra system. Mockmma uses wxMaxima to evaluate a small subset of commands in the syntax of Mathematica (tm), which is a trademark of Wolfram Research Incorporated (WRI). Mockmma is in no way associated with WRI a... 20 Dec 2009 08:08

check for non empty string
For a script I am writing there should be non-empty parameters. For this I made the following: (defvar *inputfile-name* (first *args*)) (defvar *messages* ()) (defvar *outputfile-name* (second *args*)) (if (not (non-empty-string *inputfile-name*)) (setq *messages* (append *messa... 21 Dec 2009 22:26

Flushing output
I have made a first setup to write interactive scripts with Common Lisp. In it I use the following code: (setq *outputfile* (open *outputfile-name* :direction :output :if-exists :supersede)) (if (null *outputfile*) (format t "Could not open... 20 Dec 2009 11:23

Lisp and ncurses
I have started with using Lisp. First I worked with Emacs, but for interactive scripts I was told to use Common Lisp. I was thinking about using ncurses for the interface to the user. I found: http://common-lisp.net/project/cl-ncurses/ Has anyone experience with this? When looking at the page it will not wor... 22 Dec 2009 07:03

Funding/Supporting future Common Lisp infrastructure development
Hello Lispers, Many of you will have noticed the call for funding Rich Hickey made over at the Clojure group a few days ago. http://clojure.org/funding In barely two days more than a hundred of Clojure users and half of dozen companies together donated more than half of what Rich proposed to make his de... 23 Dec 2009 13:40

run-program and binary input
Dear all, I'd like to run an external program (an image conversion program) and give it some binary data (a JPEG image) as standard input, and save the result in a file. I'm using CMUCL 20a, whose manual entry for extensions:run-program at http://common-lisp.net/project/cmucl/doc/cmu-user/extensions.html#toc4... 25 Jan 2010 09:23

Loading a file into a running image with Swank
I'm looking for documentation or an example of how to load a file into a running Lisp image using Swank. I can do it from within Emacs and Slime, but I need to be able to do it programmatically. Thanks for any help. Regards, Patrick --------------------------------------------------------------... 20 Dec 2009 19:06

Style, or lack thereof in Graham's ANSI CL
On page 61 of Graham's ANSI Common Lisp, he defines bin-search and finder, which I have copied below. I have struggled with this for days, and still don't understand these definitions completely. This morning, I wrote bin-search-2, which took about ten minutes to write (and about thirty minutes to debug), but I ... 31 Dec 2009 06:37

Question from a non-user: Garbage Collection
I would appreciate any pointers you may have on a few issues which I will make separate postings abput. Sorry if they are obvious or otherwise-unsuitable questions, but I have spent some time reading trying to answer them and have not been able to do so. What I would wish for in garbage collection in Lisp: Is ... 23 Dec 2009 10:50