http://blog.radioni.ca/index.php Zapisi iz oblasti programiranja, veb razvoja i IT uopšte sr http://blog.radioni.ca/index.php Zapisi iz oblasti programiranja, veb razvoja i IT uopšte http://blog.radioni.ca/index.php?id=P235 You'll forgive me if there is already a library or gem which already provides this feature. This piece of code was thrown together quickly as a response to a StackOverflow question. Not tested thoroughly, and not production-ready quality, but could be usable if polished a little bit. So, say you make a multilingual application and good ol' Ruby's string comparison (thus sorting string arrays, for example) doesn't work as you expect for languages other than English. With the following... http://blog.radioni.ca/index.php?id=P234 Samo kratko obaveštenje, na lokaciji jablan.radioni.ca dostupan je moj (novi) mini-blog (zapravo, uglavnom agregator mojih fidova sa Tvitera i sajta StackOverflow, doduše nađe se i poneki direktan post. Drugi poddomen je mali internet eksperiment, stranica koja nudi samo i isključivo odgovor na pitanje "koliko je sati", tj. tačno vreme. Interesuje me kolika će biti njegova posećenost kad i ako dospe u vrh Guglovih rezultata za dotične pretrage. http://blog.radioni.ca/index.php?id=P233 If you're using Linux and like the simple winamp-like UI for your music player, you are probably using Audacious (if not, you should definitely take a look). Audacious offers its own OSD for notifying about song changes etc, but I don't like it, and I wanted to make use of nice notification system Jaunty uses (notification-daemon). Audacious doesn't offer the possibility to communicate with notification-daemon out of the box (at least not that I know of), but offers the plugin which... http://blog.radioni.ca/index.php?id=P232 Most today's computers have more than one processor core, and it's a pity not to make use of that fact, especially when using a language as slow as Ruby. Unfortunately, ruby threads all execute on the same core as the process itself, so no luck there (I think jRuby works better there, but often it's not a choice). But sometimes we can use processes instead of threads. In the following example we're doing just that, forking several processes to execute a task that's suitable for... http://blog.radioni.ca/index.php?id=P231 Here's a piece of ruby code I wrote to count visits in log files. I'll explain it in more details afterwards: #!/usr/bin/ruby require 'date' log = [ ['user1', '2008-12-20 14:03:00'], ['user1', '2008-12-20 13:00:00'], ['user2', '2008-12-20 13:01:00'], ['user3', '2008-12-20 13:02:00'], ['user1', '2008-12-20 13:03:00'], ['user1', '2008-12-20 14:00:00'], ['user2', '2008-12-20 14:01:00'], ['user2', '2008-12-20 14:02:00'], ['user1',... http://blog.radioni.ca/index.php?id=P230 Sećate se onog starog vica o Muji drvoseči: Mujo i Janez sjeku šumu. Prvi dan Mujo posječe 5 stabala, Janez 12. Drugi dan Mujo 13, Janez 27. Treći dan Janez krene, a Mujo za njim da ga uhodi. Dođe Janez na mjesto gdje će sjeći, uzme sjekiru, nasjecka granja, potpali vatricu, skuva kafu, doručkuje, uzme motornu pilu, upali motor... A Mujo iz žbunja: "A ti ga pališ!" E to sam ja malopre uzviknuo kad sam saznao za komandu gem_server. Tražio sam neku referencu za Rejls... http://blog.radioni.ca/index.php?id=P229 Topla preporuka za korisnike Linuksa kojima treba laptop sa dobrim odnosom performanse i cene: HP 530 sa CoreDuo procesorom. Za 40k dinara dobijete sasvim pristojan laptop sa procesorom na 2.33GHz, 2GB memorije i 120GB hardom. Sveža instalacija Ubuntu 8.04 operativnog sistema prepoznaje sve od hardvera (nisam siguran jedino za modem, nije mi trebao). Sistem radi brzo i besprekorno. Problemi koje (još) nisam uspeo da rešim su: sleep ne radi kada se koristi Compiz, ne radi... http://blog.radioni.ca/index.php?id=P228 Čitanje tekst fajla u string. U Javi: File aFile = new File("/home/jablan/blah.txt"); StringBuffer contents = new StringBuffer(); try { BufferedReader input = new BufferedReader(new FileReader(aFile)); try { String line = null; while (( line = input.readLine()) != null){ contents.append(line); contents.append(System.getProperty("line.separator")); } } finally { input.close(); } } catch (IOException ex){... http://blog.radioni.ca/index.php?id=P227 Jedno kratko javljanje nakon gotovo dva meseca... Iz privatnih razloga vratio sam se na neko vreme (najmanje 6 meseci) nazad u Beograd. Fini ljudi iz Monstera ponudili su mi radno mesto od sredine 2008, ali nisam želeo da se unapred obavezujem, tako da sam dao otkaz. Što, načelno, i nije tako loše jer posao koji sam u poslednje vreme tamo obavljao nije bio preterano interesantan, barem ne za mene koji volim da većinu svog radnog vremena zapravo pišem programe. Imao sam par... http://blog.radioni.ca/index.php?id=P226 Poslednjih godinu-dve postaje aktuelna priča o "sledećoj velikoj stvari" na vebu - RIA, odnosno bogate Internet aplikacije i platforme koje ih nude: Flex i Silverlight. Ja nemam neki stav o svemu tome, izvesno je da se veb aplikacije teško mogu zadržati na HTML platformi i dobro je da je u opticaju nekoliko različitih igrača (nažalost, kvalitet obično nikada ne igra odlučujuću ulogu u borbama ovog tipa). No, ono o čemu sam hteo da pišem nije budućnost, već...