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• Tab Sweep - Devoxx questions, GlassFish Rest, APAC Java, Lift, JEPs, tools, ...

  - by alexismp

  Recent Tips and News on Java, Java EE 6, GlassFish & more : • Submit a question for Devoxx 2011 Keynotes (Moderator questions) • Devoxx for Java developers (The Java blog) • GlassFish REST Client: ComplexExample.java (Jason) • Oracle Technology Network site for Asia-Pacific developers (OTN APAC) • Notes on deploying Lift apps to GlassFish (Antonio) • Using JSR-250's @PostConstruct Annotation to Replace Spring's InitializingBean (DZone) • The future is in the JEPs (Stephen) • Comparison of Eclipse 3.6 and IntelliJ IDEA 10.5: Pros and Cons (Dzone)

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• Did You Know? I'm doing 3 more online seminars with SSWUG!

  - by Kalen Delaney

  As I told you in April , I recorded two more seminars with Stephen Wynkoop, on aspects of Query Processing. The first one will be broadcast on June 30 and the second on August 27. In between, we'll broadcast my Index Internals seminar, on July 23. Workshops can be replayed for up to a week after the broadcast, and you can even buy a DVD of the workshop. You can get more details by clicking on the workshop name, below, or check out the announcement on the SSWUG site at http://www.sswug.org/editorials/default.aspx?id=1948...(read more)

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• command-line zip not working

  - by ptriek

  I have a Wordpress site on a Debian/Linux dedicated server, with a Backupbuddy plugin for making automatic backups. The plugin, however, gives an error 'Your server does not support command line ZIP'. My knowledge of Linux commands is very limited, but I managed installing zip with the command sudo apt-get install zip However, I still get the same error message. Plugin documentation mentions the problem could also be caused by disabled exec() or safe_mode - but exec isn't disabled, and safe_mode is off. Any ideas what might be causing this, or how to fix it? The only thing I could think of, is it might be caused by wrong permissions?

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• Gzip compress offline?

  - by shoosh

  I've configured my site to serve compressed content by putting this line in .htaccess AddOutputFilterByType DEFLATE text/html text/plain text/xml text/javascript text/css application/javascript application/json This works perfectly for almost all files except a few large JSON files that are above 200Kb. For some reason they are not being compressed. I see that they don't using the net tab in firebug and the Network section in chrome. So as a workaround I thought I could compress these files offline and have Apache read them compressed. What tool should I use to compress them? is the linux gzip the one? any special flags or something I should use? What should I put in .htaccess so that the server would know to serve these files with content-encoding gzip ?

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• The performance implications of IEnumerable vs. IQueryable

  It all started innocently enough. I was implementing a "Older Posts/Newer Posts" feature for my new web site and was writing code like this:IEnumerable<Post> FilterByCategory(IEnumerable<Post> posts, string category) {  if( !string.IsNullOrEmpty(category) ) { return posts.Where(p => p.Category.Contains(category)); }}...  var posts = FilterByCategory(db.Posts, category);  int count = posts.Count();... The "db" was an EF object context object, but it could just as...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• The performance implications of IEnumerable vs. IQueryable

  It all started innocently enough. I was implementing a "Older Posts/Newer Posts" feature for my new web site and was writing code like this:IEnumerable<Post> FilterByCategory(IEnumerable<Post> posts, string category) {  if( !string.IsNullOrEmpty(category) ) { return posts.Where(p => p.Category.Contains(category)); }}...  var posts = FilterByCategory(db.Posts, category);  int count = posts.Count();... The "db" was an EF object context object, but it could just as...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Is it really a security problem to have non secure assets on an ssl page?

  - by blockhead

  My understanding is that this is just an example of being overly cautious, but if my checkout form contains an unsecure asset on it, that doesn't endanger anybody's credit card numbers from being caught by a man-in-the-middle. I'm asking this because every once in while, maybe because of cached content or whatnot, somebody writes in saying that they are seeing this "error" (even though there are no unsecure assets on my page), but they want an explanation. So yes, I can tell all about encryption and certificates and trust and men-in-the-middle. But what do I tell them about this. How do I convince them that the site is 100% safe (and if it isn't let me know that I'm mistaken!)

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• Corsair Hydro i series cpu cooler fan control

  - by user214690

  Im relatively new at Ubuntu and have found an answer to basically every single issue ive ever had thru this site... Otherthan this. I have been toying with the idea of a Corsair h80i for my dual boot system (win7/U12.10) and mostly use it in ubuntu. I have done some research on the interweb regarding fan control in linux and nearly ran up short untill I came across this thread: http://ubuntuforums.org/archive/index.php/t-2096166.html And it seems to have worked around it. (altho I have not tested it for myself) Is there any program/library/source that can be used to control the fans without having to MacGuyver it??

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• Free Training - Building Silverlight Business Applications

  We recently released a new free Silverlight 4 training kit that walks you through building business applications with Silverlight 4. You can also download the entire offline version of the kite here.  You can use the 8 modules, 25 videos, and several hands on labs online or offline from links on the Channel 9 site. Ive included a breakdown and links to all of the content here in this post. The key to this training material is not the features it covers (though it covers a variety of topics including...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Quality Backlinks - A Key to Search Engine Optimization

  Backlinks are the links which are going to your blogs, sites or articles. Backlinks are the most important and single very significant factors to give the page rank to your site or blogs.They are great technique and way to find a proper and a decent place in the goggle or any of the major search engines. There are many other aspects of SEO but quality back links are the most appropriate way to find a great way in terms of search engine optimization. Now it is the time to take a look at the components which are very important about backlinks.

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• Do Not Track feature of IE10

  - by Pete Herbert Penito

  One of our clients is getting a bit worried about the new "Do Not Track" feature of Internet Explorer 10. Her site is heavily dependent on php sessions (as I imagine many other sites are). This was what she was reading: http://www.bbc.co.uk/news/technology-18288710 I need some clarification, will this affect how sessions (or cookies) work on normal web sites that use the PHP $_SESSION array? Or is it regarding only how advertising works (engadget's article seems to insinuate this)? Can anyone provide a more technical overview (and the ramifications) of PHP-powered websites?

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• PHP OOP: Am i following right way?

  - by sineverba

  I'm learning OOP (PHP). I've realized my own CRUD Class, that performs some kind of queries SQL. Btw, a Gasoline asked us to realize a smart, simple web-app where he can update prices of his gasoline (gasoline, diesel, lpg) and via an API i could recall them and display in his site. So, I did create a new Class Gasoline but it perform some methods of CRUD Class public function getPrezzoBenzina($id) { $prezzo_benzina = $this->distributore->sql('SELECT prezzo_benzina FROM prezzi WHERE id = '.$id); return $prezzo_benzina } And so on (code is pseudocode, just to explain). I could perform all my code only with help of Crud Class... without necessity of Class Gasoline. So, what I'm missing about OOP? Where am I wrong?

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• Preventing Duplicates on Google

  - by abel

  I am currently using a rewrite rule to enable access to .php pages, without using the php extension. However to prevent old links from breaking, the pages can still be accessed via links containing the .php extension too. For eg. domain.com/page.php can now be accessed at domain.com/page All the links on the website now use domain.com/page type links within the site. However older incoming links will still link to the .php pages, meaning Google will index both pages and mark them as duplicate. I have two plans to remedy the situation. Use a php 301 redirect: When a page is accessed with the .php extension, I can redirect each page individually using a 301 redirect using php Using Canonical: Place a canonical tag on each page, pointing to the ".php" less version My Question: Are both methods equally efficacious in preventing Google from indexing my ".php" pages? Which method should be preferred, by convention or otherwise?

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• Tor and Anlytics how to track?

  - by Jeremy French

  I make a lot of use of Google Analytics, Google has reasonable tracking for location of users so I can tell where users come from. I know it is not 100% but it gives an idea. In the wake of Prism it is possible that more people will make use of networks such as tor for anonymous browsing. I have no problem with this, people can wear tin foil hats while browsing my site for all I care, but it will lead to more erroneous stats. Is there any way to flag traffic as coming from TOR, so I can filter location reports not to include it, and to get an idea of the percentage of traffic which does use it? Has anyone actually tried this?

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• Can I minify Javascript that requires copyright notice?

  - by Nathan Long

  I guess this is actually a legal question, but it relates to software. I'm about to include a JS plugin in a project. The comments include: Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. Is using this in my web site "redistribution?" If I minify this to conserve bandwidth, I assume it will strip all comments. If the answer to #1 is yes, doesn't that imply I'm legally not allowed to minify it? (That would stink, since I was planning to auto-minify all JS as part of the deploy process.)

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• DbNetSuite 4.2 released with integrated database charting

  DbNetLink is pleased to announce the release of DbNetSuite 4.2. DbNetSuite is a set of lightweight integrated AJAX enabled ASP.NET components for creating web applications that interface with the database and file systems. New in 4.2 "Out of the box" integration with MS Chart Control Save runtime user configuration with User Profiles Improved performance   Visit the web site for further information, online demos and a fully functional evaluation download. http://www.dbnetsuite.com...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Ouya / Android : button mapping biwise

  - by scorvi

  I am programming a game with the Gameplay3d Engine. But the Android site has no gamepad support and that is what I need to port my game to Ouya. So I implemented a simple gamepad support and it supports 2 gamepads. So my problem is that I put the button stats in a float array for every gamepad. But the Gameplay3d engine saves their stats in a unsigned int _buttons variable. It is set with bitwise operations and I have no clue how to translate my array to this.

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• HTML5 Boilerplate : 4ème version de l'outil de prototypage de designs, documentation embarquée et de nouvelles @media queries

  HTML5 Boilerplate atteint sa quatrième version Code réorganisé, documentation embarquée, licence MIT et nouvelles @media queries La nouvelle version de HTML5 Boilerplate vient d'être distribuée. C'est le quatrième opus du fameux outil de prototypage de designs HTML5, à partir de templates HTML, CSS et JavaScript. Quoi de neuf dans cette version ? D'abord un nouveau site élégant, une nouvelle licence MIT (au lieu d'être simplement dans le domaine public), une documentation embarquée et un code réorganisé et épuré. Les commentaires « inlines » superflus ont été enlevés et les fichiers CSS, JS et les sous répertoires renommés. On remarque aussi une meilleure uniformisation du formatag...

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• Google Sites page never shows up in Google Search organic results?

  - by gus

  I use Google Sites (i.e.: https://sites.google.com/site/EXAMPLE/ ) as a convenient way to maintain up-to-date info on several residential properties, info that's often requested by my property agents, its been around for about 1 year, but I still can never get it to appear in organic Google search results or Bing, even if I search the specific keywords such as the street names. I submitted the URL manually to search engines, knowing that my Sites page probably has very few incoming links. Is this expected behavior? The content of my page has simple formatted text, and outgoing links to Picasa/G+/imgur photo albums. Am I doing something wrong or do all GoogleSites pages have poor organic search rank? Thank you very much.

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• Installing Ruby on Rails without access to command line

  - by Darwin

  I'm VERY new to this whole web dev thing but I can program and I liked Ruby when I used it before. Now, I've got web hosting and a domain and a site on there that's currently ran under Joomla but I'd like to experiment with Rails. The most access I can get to the server is FTP and maybe a setting here and there in the control panel. Definitely no command line. Is there a way to just, I don't know, upload ruby on rails to a folder and run it in a browser? That's how Joomla works I think. Literally every article I read about this starts with "you just do sudo get..." mumbo jumbo.

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• Is there any advantage/disadvantage to using robots.txt to disallow access to legal pages such as terms, privacy policy, etc.?

  - by CaptainCodeman

  As I understand, having repetitive content is a detriment to search engine placement. Given that many websites that use similar or even identical "Terms and Conditions" and "Privacy Policy" pages due to similar legal wording or due to copy & pasting from the same source, would it be a good idea to disallow access to these pages via robots.txt, in order to avoid being penalized for "non-original content"? Or, on the contrary, could the search engines identify this as circumvention and penalize the site for trying to hide content? Or does it not matter?

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• Confused with X.ORG version number

  - by caligula

  There is my trouble: I'm trying to install ATI drivers on my Dell Vostro 3350 laptop. On the AMD's site I followed steps to determine which driver should I use. After selecting what hardware I use I got a link to download amd-driver-installer-12-3-x86.x86_64.run and below was a description of that driver that it was compatible with X.Org version from 6.7 to 7.6. And I do not know what version of X.Org my Ubuntu uses. Cause after googling I found that version is 7.6 in Ubuntu 11.10. But after typing: X -version I got the output: X.Org X Server 1.10.4 Release Date: 2011-08-19 X Protocol Version 11, Revision 0 So what is the exact version of X.Org in Ubuntu 11.10 and how should one reliably determine it? Can anyone construe? Thanks.

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• Any learning/studying material for C/C++ that use game programming as learning context out there?

  - by mac

  As most of game programming is done - I read on this very site - in C/C++ I was wondering if there is any learning/studying material for C/C++ that would target specifically game programming. I am not looking for material about "developing games" or "software architecture for games", but rather for material that uses "game programming" as the CONTEXT for introducing and illustrating C/C++ features, idioms, programming techniques, etc... With a simile: think to the GOF book on design patterns. There, they used "developing a text-editor" as a context for introducing design patterns, but the book is most definitively not a book about "developing text-editors". Thanks in advance for your time and advice! PS: My background: I am a programmer with a solid experience in OO scripting languages and only some experience in C and Assembler (on AVR microcontrollers), so I am thinking to mid-to-advanced level material, rather than tutorials for beginners, although it might be interesting to take a look to the latter ones if nothing else is available.

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• Ubuntu Wubi Booting Problem

  - by D3s7

  i have a problem with my Ubuntu 12.04 Wubi installation, sometimes when booting, the computer will get to the purple screen without the Ubuntu logo, then will go to a black screen and then lots of white saccaged colors will appear and i will be taken to the login page. But sometimes, it just get stuck on the black screen and does nothing and i have to hard shutdown and retry it until it works. What may cause this problem and why? I can shutdown correctly. Thanks for helping. Edit: RADEON HD 7650M Graphic card with latest available Drivers on amd's driver download site (fglrx drivers caused shutdown problems so i removed them). Screen resolution is 1600x900.

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• Using Mod_Rewrite To Block Referrer Based On Domain Extenstion?

  - by Matt

  I've been in web development for several years now (I'm a student web designer), and recently, I've begun to experiment with mod_rewrite for things like URL shortening. I was wondering, is it possible to block a referrer by domain extension, instead of just by full site, etc.? So, instead of RewriteEngine on # Options +FollowSymlinks RewriteCond %{HTTP_REFERER} examplesite\.com [NC] RewriteRule .* - [F] could you do RewriteEngine on # Options +FollowSymlinks RewriteCond %{HTTP_REFERER} \.com [NC] RewriteRule .* - [F] without the full domain name? Thanks. I'm fairly knowledgeable about other web dev / hosting topics, but mod_rewrite is new to me and Google wasn't helping.

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