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[toronto-lisp] dealing with strings -> symbols
by Matijaca, Aleksandar 06 Nov '10

06 Nov '10

Hi there, I have come across something that I need just a little bit of help with. I managed to write some lisp code to read a flat file, line by line. I also managed to put those lines of code into something like this: ( ( "A,MSFT.N,D,12.4,12:43:00") ( "f,IBM.N,f,108.4,11:09:023") ) All comma delineated text files. Now, I would like to convert this into something that I can deal with from a lisp perspective - I would like to get so that these values are symbols - so this is what I really want: ( ( A MSFT.N D 12.4 12:43:00 ) ( f IBM.N f 108.4 11:09:023 ) ) I noticed that there is a function called INTERN which seems to convert a regular string to a symbol, but, I don't really have a regular string, I have a "mess" as shown above. Any idea on how I can go from a messed up single long string, to a bunch of symbols, so I can finally start dealing with the symbols in the line from a file a "lisp way"? Thanks, Alex. _______________________________________________________________________ This email is intended only for the use of the individual(s) to whom it is addressed and may be privileged and confidential. Unauthorised use or disclosure is prohibited. If you receive This e-mail in error, please advise immediately and delete the original message. This message may have been altered without your or our knowledge and the sender does not accept any liability for any errors or omissions in the message. Ce courriel est confidentiel et protégé. L'expéditeur ne renonce pas aux droits et obligations qui s'y rapportent. Toute diffusion, utilisation ou copie de ce message ou des renseignements qu'il contient par une personne autre que le (les) destinataire(s) désigné(s) est interdite. Si vous recevez ce courriel par erreur, veuillez m'en aviser immédiatement, par retour de courriel ou par un autre moyen.

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[toronto-lisp] November meeting
by Vish Singh 03 Nov '10

03 Nov '10

Today we discussed creating a list of good Lisp books recommended by the members of our group. I will put together such a list if you all could write down your suggestions and reply to this thread. (The books listed below can be considered included.) It would go up on lisptoronto.org for the time being. For the future: It would be nice to have an open "Toronto Lisp Wiki" that anyone can edit. attendees: Paul Tarvydas Brian Connoy Vishvajit Singh Aleksandar Matijaca Leo Zovic Doug Hoyte Bryce Moore a subset of the topics discussed: - old Lisp book from 1984, 2 pages on macros (what was this book?) - Land of Lisp book, lots of drawings - the Little, Seasoned, and Reasoned Schemer books - SICP, SICM, PAIP - International Lisp Conference (and SPLASH, formerly OOPSLA) in Reno, Nevada, attended by Paul * evolving fixes to software bugs * picbreeder.org * QuickLisp * design of the Common Lisp Standard * molecular biology needs good hackers + easier to teach a coder biology than to teach a biologist to code + the genome is in fact much like a computer program + surprisingly much of the genome is unused, filled with junk and old retroviruses - Rich Hickey's talks and presentations * my personal favorite: http://www.infoq.com/presentations/Are-We-There-Yet-Rich-Hickey - Lisp/Scheme on the iPad and iPhone - POSIX support in the Windows NT kernel - Homer: a tool for blind people to find their way in buildings

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[toronto-lisp] Meeting tomorrow - 6PM - Linuxcaffe
by Vish Singh 02 Nov '10

02 Nov '10

The November meeting of the Toronto Lisp Users Group: be there, or be square [brackets]! Tuesday November 2 2010 - 6PM - Linuxcaffe (for directions see http://www.lisptoronto.org/) Land of Lisp is an exciting new way to learn Lisp.. I wonder if anyone has the e-book or physical versions to show off. Come on out - and bring your Lisp books, Lisp code, Lisp war stories, Lisp Halloween costumes, etc.! See you tomorrow, Vish

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[toronto-lisp] Land of Lisp
by Brian Connoy 28 Oct '10

28 Oct '10

Conrad Barski's "Land of Lisp" is available now in eBook form (hardcopy soon to follow)! http://landoflisp.com/ I see in the acknowledgements the name "Christopher Brown". Perchance, is that our own Toronto-Lisp "Christopher Browne" !? BC

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[toronto-lisp] Lambda question
by Aleksandar Matijaca 19 Oct '10

19 Oct '10

Hi there, a quick question - I have a reasonably firm understanding of how lambda functions work, however, I cannot immediately see why you would want to use one, when you can write a perfectly good NAMED function instead... So under which circumstances would you absolutely want to use a lambda function and why, and under which circumstances would you absolutely NOT want to use a lambda function.. Thanks, Alex.

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[toronto-lisp] Mandelbrot set renderer, in memory of Benoit Mandelbrot
by Vish Singh 18 Oct '10

18 Oct '10

I wrote a quick Mandelbrot set renderer in Clojure, after hearing the sad news that the great mathematician Benoit Mandelbrot passed away this weekend. Watch his TED talk (http://www.ted.com/talks/benoit_mandelbrot_fractals_the_art_of_roughness.ht…) and you will find it hard to feel as if you didn't know him. It was simple and fun to write, as Clojure has support for complex numbers. It took me a while to figure out how to turn that support on, though. It takes less than a minute to run, and can surely be optimized. http://github.com/vishsingh/mandelbrot The output of the program looks like this: http://github.com/vishsingh/mandelbrot/raw/master/result.png It can surely be extended quite easily to zoom in to smaller parts of the set. Vish

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[toronto-lisp] Announcing SocialTechCampToronto Saturday Oct 23rd
by Ushnish Sengupta 17 Oct '10

17 Oct '10

Apologies for any duplicate postings, but would love to have some projects from Toronto Lisp Users Group presented. Event: SocialTechCampToronto Date: Saturday Oct 23rd Time: 9:00 am to 5:00 pm Location:OISE (Ontario Institute for Studies in Education) Building 252 Bloor Street West 7th Floor Toronto, Ontario M5S 1V6 (on top of St. George subway station) Format: Presentations 9 am-12:30 pm, Breakout groups 1:30 pm to 5:00 pm The Breakout groups will be formed in a BarCamp style "unconference" where the topics are determined by the people present. Description: There are a number of Social Technology projects underway in the Greater Toronto Area as well as a number of individuals who are working on international Social Technology projects. All of these projects have an Open Source component. In conjunction with Open Source Week Toronto, we will hold an event which will enable dialogue and collaboration between projects and individuals. For the unconference, we welcome any proposals on the following topics and related topics: 1) Providing computers to nonprofits 2) Setting up computer centres in low income apartment complexes 3) Providing Linux Ubuntu desktops and training to individuals 4) Public access hot spots in public spaces such as parks 5) Free wireless networks 6) International projects such as the World Computer Exchange, and One Laptop Per Child. 7) Design for people with disabilities Add your topics at: http://barcamp.org/w/page/SocialTechCampToronto Please register at: http://stcu.freegeektoronto.org/ This is a free event!

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[toronto-lisp] Scheme interpreter for iPhone
by Aleksandar Matijaca 17 Oct '10

17 Oct '10

I installed it and tried it. Great little thing just for testing small code snippets. Taken by a_matijaca http://www.flickr.com/photos/26563081@N00/5087485415 Sent from my iPhone

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[toronto-lisp] quicklisp
by Paul Tarvydas 16 Oct '10

16 Oct '10

FYI, as posted by Zach Beane: I recently released a beta version of my Quicklisp project. Quicklisp is a library manager for Common Lisp. It can download, install, and load any of over 300 libraries with a few simple commands. Quicklisp is easy to install and works with ABCL, Allegro CL, Clozure CL, CLISP, CMUCL, ECL, LispWorks, SBCL, and Scieneer CL, on Linux, Mac OS X, and Windows. For more info, see: http://quicklisp.org/beta/ Please give it a try and let me know what you think. Thanks, Zach

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[toronto-lisp] Found a development technique that works for me
by Aleksandar Matijaca 14 Oct '10

14 Oct '10

For LispWorks, instead of typing my code in repl, I type it in the editor, also compile there , and use repl for testing only. I have noticed that the editor has some very handy buffers and definitions menus. Exactly the stuff I was looking for. Sent from my iPhone

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