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• Des fonctions d'Ubuntu 13.04 seront développées à huis clos, vers une fermeture de l'OS ?

  Des fonctions d'Ubuntu 13.04 développées à huis clos Canonical adopte une nouvelle méthode de développement pour Raring Ringtail, vers une fermeture de l'OS ? À peine Canonical a publié Ubuntu 12.10, que la firme livre déjà quelques informations sur son successeur. Comme il est de coutume, l'OS est d'abord passé par la traditionnelle étape de…

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• How to write (simple) macro?

  - by krzysz00

  I need to write a macro (with-hooks (monster method who what) &body body) for a game I'm writing. Monster is a CLOS object, method and who are strings and what is a function (#' notation). The macroexpansion would be something to the effect of (add-hook monster method who what) ,@body (remove-hook monster method who) I have absolutely no…

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• Create a polynomial object from a number using change-class

  - by charlieb

  I have written a polynomial class along the lines described in SICP 2.5.3 (except using defclass). I would like to be able to seamlessly add and multiply polynomials and regular numbers but I can't make change-class accept a number. I tried to simplify the problem by changing class from an integer to a float: (change-class 4 'float) but…

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• memory usage by objects in common lisp

  - by Farzad Bekran

  Is there a way to find out how much memory is used by an instance of a class or basic data types in general? I have a toy webframework in cl that creates and manages web pages with instances of classes that represent the html tags and their properties, and as they are supposed to make an html page, they have children in a slot called…

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• In gmail, is there a way to temporarily bounce back all incoming mail (SMTP 550 User Unknown)? [clos

  - by nobody

  I have a gmail account I would like to keep in the long-term. But in the short-term, I want all incoming mail to bounce (SMTP 550 code, "User Unknown") so as to deter spammers. Is this possible?

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• Using game of life or other virtual environment for artificial (intelligence) life simulation? [clos

  - by Berlin Brown

  One of my interests in AI focuses not so much on data but more on biologic computing. This includes neural networks, mapping the brain, cellular-automata, virtual life and environments. Described below is an exciting project that includes develop a virtual environment for bots to evolve in. "Polyworld is a cross-platform (Linux,…

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• Does CLOS have an eql specialization dispatch on strings?

  - by mhb

  Examples of what you can do. (defmethod some-fn ((num real)) (print "an integer")) (defmethod some-fn ((num real)) (print "a real")) (defmethod some-fn ((num (eql 0))) (print "zero")) (some-fn 19323923198319) "an integer" (some-fn 19323923198319.3) "a real" (some-fn 0) "zero" It also works with a general 'string type. …

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• Why is short project lifetime and other situation-specific reasons used to excuse crappy code? [clos

  - by sharptooth

  Every now and then (including on SO) people say things implying that "if the project is short lived you can leave obvious defects there" or "that memory leak only accounts for 100 bytes per whole program lifetime and could be left". Now in my practice I always reuse company-owned code to the greatest extent I can. Like if…

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• Show the icelandic volcano ash cloud on google maps? Is there any open layer for this out yet? [clos

  - by Ali

  Hi guys - I need to show the ice land volcano ash cloud on a google maps site - is there any free open available in real time layer that I can apply using code ?

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• Types in Lisp and Scheme

  - by user2054900

  I see now that Racket has types. At first glance it seems to be almost identical to Haskell typing. But is Lisp's CLOS covering some of the space Haskell types cover? Creating a very strict Haskell type and an object in any OO language seems vaguely similar. It's just that I've drunk some of the Haskell kool-aid and I'm…

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• Edubuntu et kubuntu 13.04 disponibles en Alpha 1, Raring Ringtail adopte un nouveau cycle qui met fin aux versions Alpha pour Ubuntu

  Edubuntu et kubuntu 13.04 disponibles en Alpha 1 Raring Ringtail adopte un nouveau cycle qui met fin aux versions Alpha pour Ubuntu Canonical vient de publier la première Alpha de Raring Ringtail, qui marque le début du cycle des sorties des préversions d'Ubuntu 13.04, qui aboutira à la publication de la version finale…

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• Que pensez-vous du projet de régulation internationale d'Internet ? 193 pays réunis à Dubaï, des acteurs du Web s'inquietent

  Qu'auriez-vous aimé ou pas voir sur le nouveau traité international pour réguler Internet? Les géants de la Toile s'inquiètent au moment où 193 pays réunis à Dubaï décident sur l'avenir d'Internet Ce lundi à Dubaï, Emirates Ababes Unis, des délégations de 193 pays se réunissent à huis clos pour discuter de la…

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• How to make TWebBrower ignore accelerator chars of others controls?

  - by douglaslise

  I have a TWebBrowser placed on a form with the designMode enabled. Bellow the browser I have a close button with the Caption setted to 'Clos&e'. When I am editing the contents of a document inside the WebBrowser and I press the key E the button close is called. It appears that it is treating TWebBrowser…

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• How to make TWebBrowser ignore accelerator chars of others controls?

  - by douglaslise

  I have a TWebBrowser placed on a form with the designMode enabled. Bellow the browser I have a close button with the Caption set to 'Clos&e'. When I am editing the contents of a document inside the WebBrowser and I press the key E the button close is called. It appears that it is treating TWebBrowser…

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• Is OOP hard because it is not natural?

  - by zvrba

  One can often hear that OOP naturally corresponds to the way people think about the world. But I would strongly disagree with this statement: We (or at least I) conceptualize the world in terms of relationships between things we encounter, but the focus of OOP is designing individual classes and their…

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• Java - is this an idiom or pattern, behavior classes with no state

  - by Berlin Brown

  I am trying to incorporate more functional programming idioms into my java development. One pattern that I like the most and avoids side effects is building classes that have behavior but they don't necessarily have any state. The behavior is locked into the methods but they only act on the…

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