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  • Why Java as a First Language?

    - by dsimcha
    Why is Java so popular as a first language to teach beginners? To me it seems like a terrible choice: It's statically typed. Static typing isn't useful unless you care a lot about either performance or scaling to large projects. It requires tons of boilerplate to get the simplest code up and running. Try explaining "Hello, world" to someone who's never programmed before. It only handles the middle levels of abstraction well and is single-paradigm, thus leaving out a lot of important concepts. You can't program at a very low level (pointers, manual memory management) or a very high level, (metaprogramming, macros) in it. In general, Java's biggest strength (i.e. the reason people use it despite the shortcomings of the language per se) is its libraries and tool support, which is probably the least important attribute for a beginner language. In fact, while useful in the real world these may negatives from a pedagogical perspective as they can discourage learning to write code from scratch.

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  • Bing à son plus haut depuis son lancement sur le marché américain, Google continue de progresser et

    Mise à jour du 24/03/10 Bing à son plus haut depuis son lancement Et Google continue de progresser aux Etats-Unis, Yahoo recule Selon l'étude du site de mesure comScore, les deux moteurs de recherche de Google et de Microsoft (Bing) ont progressé au mois de Février 2010 aux Etats-Unis (marché numéro un des requêtes au niveau mondial). Les positions restent néanmoins assez similaires puisque Google progresse de + 0,1%, contre +0,2 pour Bing, pour arriver à des parts de marchés (PDM) respectives de 65,5 % et 11,5 %. Un autre cabinet (Nielsen), donne même une PDM de 12,5 % au moteur de Microsoft. Soit la meilleure performance de B...

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  • Tons of problems a new user is encountering

    - by Barney
    I've borrowed this laptop from a friend. I wanted to install AdBlock to boost performance. First weird thing was that even though I was on Chrome, Chrome suggested me installing him? So I tried to install ,than it gave me some message about broken dependencies. I Googled and tried to run those commands you guys were suggesting, but than it popped up error messages about everything again. Than I found out that some package called linux image generic is broken, than I tried to find an answer to that, but on the topic it was ” ndk.bhj\spo;ujvsdljvaEOYUFgidgAPIF;hsgvk in other words, I didn't understand anything about it, than there's this thing: E: Unable to lock the administration directory (/var/lib/dpkg/), is another process using it? Seriously, when I'm trying to fix an error, there is another one. I'm on something called GNOME. Sooo, where do I start?

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  • What is the most complicated data structure you have used in a practical situation?

    - by Fanatic23
    The germ for this question came up from a discussion I was having with couple of fellow developers from the industry. Turns out that in a lot of places project managers are wary about complex data structures, and generally insist on whatever exists out-of-the-box from standard library/packages. The general idea seems to be like use a combination of whats already available unless performance is seriously impeded. This helps keeping the code base simple, which to the non-diplomatic would mean "we have high attrition, and newer ones we hire may not be that good". So no bloom filter or skip-lists or splay trees for you CS junkies. So here's the question (again): Whats the most complicated data structure you did or used in office? Helps get a sense of how good/sophisticated real world software are.

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  • Radeon Open Source Drivers Configuration

    - by Andy Turfer
    How does one configure the Radeon Open Source drivers? I have just installed Ubuntu 12.10 and want to try the Open Source drivers instead of the proprietary AMD binaries. After the installation, the driver seems to be installed, I have wobbly windows working (can't use a PC without wobbly windows!), and life is generally good. I have a problem when I connect a secondary monitor. Performance is killed (everything becomes laggy and jerky) and my laptop sits on the right-hand side of the monitor, not the left. I'd like to know how to turn off the Laptop's monitor so I'm just using the external monitor. How can I do this using the Open Source Radeon drivers? I can't find a GUI management tool, and there's no longer an xorg.conf. What to do?

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  • OTN APAC Tour 2012: Bangkok, Thailand - Oct 22, 2012

    - by Mike Dietrich
    Roy had done some of the South America OTN Tour 2012 dates earlier this year in Peru and Chile. And I'm looking forward to present next Monday, October 22nd, 2012, on the OTN Tour 2012 in Bangkok, Thailand. The event will be held at the Eastin Grand Hotel in Bangkok. Register today for the OTN APAC Tour 2012 in Bangkok, Thailand! Presentations will include: 9:30am - 10:15am:Best Practices for Upgrading to Oracle Database 11.2 1:00pm - 1:45pm:How to improve Upgrade Performance - Real Speed, Real Customers, Real Secrets 2:45pm - 3:30pm:Oracle Data Pump: Overview and Best Practices Plus presentations  about Security, RMAN and other topics by Francisco Alvarez and others. Please find the complete agenda here. Looking forward to meet you on Monday - CU there

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  • Configuring trace file size and number in WebCenter Content 11g

    - by Kyle Hatlestad
    Lately I've been doing a lot of debugging using the System Output tracing in WebCenter Content 11g.  This is built-in tracing in the content server which provides a great level of detail on what's happening under the hood.  You can access the settings as well as a view of the tracing by going to Administration -> System Audit Information.  From here, you can select the tracing sections to include.  Some of my personal favorites are searchquery,  systemdatabase, userstorage, and indexer.  Usually I'm trying to find out some information regarding a search, database query, or user information.  Besides debugging, it's also very helpful for performance tuning. [Read More] 

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  • Significant number of non-HTTP requests hitting my site

    - by Mark Westling
    I'm seeing a significant number of non-HTTP requests hitting a site I just launched. They show up in the server (nginx) logs as non-ASCII and get rejected (correctly) with a 400 status. Here are some lines from the log: 95.132.198.189 - - [09/Jan/2011:13:53:30 -0500] "œ$A\x10õœ²É9J" 400 173 "-" "-" 79.100.145.126 - - [09/Jan/2011:13:57:42 -0500] "#§i²¸oYi á¹„\x13VJ—x·—œ\x04N \x1DÔvbÛè½\x10§¬\x1E0œ_^¼+\x09ÜÅ\x08DÌÃiJeT€¿æ]œr\x1EëîyIÐ/ßýúê5Ǹ" 400 173 "-" "-" 79.100.145.126 - - [09/Jan/2011:13:58:33 -0500] "¯Ú%ø=Œ›D@\x12¼\x1C†ÄÀe\x015mˆàd˜Û%pÛÿ" 400 173 "-" "-" What should I make of this? Is this some sort of scripted attack? Or could these be correct requests that have somehow been garbled? They're not affecting the performance of the site and I'm not seeing any other signs of attacks (e.g., no strange POSTs) so at this point I'm more curious than afraid.

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  • Terra lang and Lua

    - by msalese
    I was reading on terralang site about terra language as "a new low-level system programming language that is designed to interoperate seamlessly with the Lua programming language..." Zach DeVito (the main author) write about the use of terra : A scripting-language with high-performance extensions..... An embedded JIT-compiler for building languages..... A stand-alone low-level language.... But (may be my fault) I don't understand if terra is: a luaJit competitor a better system to interface with c library something better than luaJit using llvm Can someone help me to better understand what is going on terralang project ? Thanks

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  • How to improve quality of software

    - by hariharan
    Last week in our organization, we triggered a topic related to different ways of improving the quality of software (both technical as well as functional related topics). Since i am a technical person, i suggested following ideas, Use case based detailed design document – Both technical as well as functional specification should be well organized according to use case requirement. Design patterns – Will help developers to adopt common approach irrespective of technologies. Analyze and implement new technologies – Helps to improve the performance as well as the security of the application. As I am not a well experienced technical candidate , i am unable to provide other solutions. If any suggestions or topics related to this (including testing, functional requirement), please post your valuable comments.

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  • Which is the best non-java, dynamic, programming language to build attractive GUIs?

    - by VeeKay
    I am well acquainted with java and groovy but somehow I am not intrigued by the performance or looks of swing based applications that are developed on the same. So I want to learn and know about THE best alternate dynamic programming language (coz I am looking for little bit of luxury while writing code by not willing to fiddle with pointers, memory handling, static typing difficulties etc) to develop attractive cross platform GUIs. To be precise, when I say attractive I mean support for elegant translucent windows and nicer components (not the flashy adobe stuff). Can you please suggest me a programming language that manages to fit into this?

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  • HTTP Session Invalidation in Servlet/GlassFish

    - by reza_rahman
    HTTP session invalidation is something most of us take for granted and don't think much about. However for security and performance sensitive applications it is helpful to have at least a basic understanding of how it works in Servlets. In a brief code centric blog post Servlet specification lead Shing Wai Chan introduces the APIs for session invalidation and explains how you can fine tune the underlying reaper thread for session invalidation when it is needed in GlassFish 4. Don't hesitate to post a question here if the blog is not clear, this is a relatively esoteric topic...

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  • Setting density for Android game

    - by Asghar
    I am developing an Android game, in which a ball (bitmap) translates( is in motion). So I have provided motion equations for the ball. I have checked my app on Samsung galaxy S2 whose actual density is roundly 252 dpi, and It works fine on that. So my question is that Does these motions of bitmaps in surfaceView, depends on actual density of phone( i.e 252 dpi for S2) or generalized density(i.e 240 dpi). I am confused whether if I run this app on 235 dpi smartphone, So will it have the same performance of motion as it is on Galaxy S2( with 252 dpi) or it would be little slow ? Any help will be appreciated.

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  • OpenJDK In The News: Oracle Outlines Roadmap for Java SE and JavaFX at JavaOne 2012

    - by $utils.escapeXML($entry.author)
    The OpenJDK Community continues to host the development of the reference implementation of Java SE 8. Weekly developer preview builds of JDK 8 continue to be available from jdk8.java.net.OpenJDK continues to thrive with contributions from Oracle, as well as other companies, researchers and individuals.The OpenJDK Web Site Terms of Use was recently updated to allow work on Java Specification Requests (JSRs) for Java SE to take place in the OpenJDK Community, alongside their corresponding reference implementations, so that specification leads can satisfy the new transparency requirements of the Java Community Process (JCP 2.8).“The recent decision by the Java SE 8 Expert Group to defer modularity to Java SE 9 will allow us to focus on the highly-anticipated Project Lambda, the Nashorn JavaScript engine, the new Date/Time API, and Type Annotations, along with numerous other performance, simplification, and usability enhancements,” said Georges Saab, vice president, Software Development, Java Platform Group at Oracle. “We are continuing to increase our communication and transparency by developing the reference implementation and the Oracle-led JSRs in the OpenJDK community.”Quotes taken from the 14th press release from Oracle mentioning OpenJDK, titled "Oracle Outlines Roadmap for Java SE and JavaFX at JavaOne 2012".

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  • Gaming with ATI open-source drivers

    - by user7174
    I have recently bought humble bundle 2 ( http://www.humblebundle.com/ ). Is there a way to run Braid using ATI's open-source drivers? The game always crashes. When do get it to start in windowed mode once i go to the first level it will crash. I am using the lastest version of Braid (ST3C ignored) When I use the proprietary drivers Braid works flawlessly and World of Goo performance is increased. However there is terrible screen tearing with the ATI propritary drivers. So my question is: How do I play Braid if I want to use the proprietary drivers?

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  • New Marketing Assets Available

    - by swalker
    NEW translated demand generation materials available for the following Oracle Marketing Kits, designed to help partners generate sales around Oracle's solutions: Server & Storage: Improve Database Capacity Management with Oracle Storage and Hybrid Columnar Compression Server & Storage: Accelerating Database Test & Development with Sun ZFS Storage Appliance Server & Storage: Upgrade SAN Storage to Oracle Pillar Axiom Server & Storage: SPARC Refresh with Oracle Solaris Operating System Server & Storage: SPARC Server Refresh: The Next Level of Datacenter Performance with Oracle’s New SPARC Servers Server & Storage: Oracle Server Virtualization Server & Storage: Oracle Desktop Virtualization

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  • New Solaris 11 book available

    - by user12611852
    A new Solaris 11 book is now available.  Congratulations to my colleague in the Oracle Public Sector Hardware sales organization "Dr. Cloud" Harry Foxwell and his co-writers on publishing Oracle Solaris 11 System Administration The Complete Reference Table of contents 1 The Basics of Solaris 11 2 Prepare a System for Solaris3 Installation Options4 Alternative Installations for Enterprise5 The Solaris Graphical Desktop Environment6 The Service Management Facility7 Solaris Package Management "Image Packaging System"8 Solaris at the Command Line9 File systems and ZFS10 Customize the Solaris Shells11 Users and Groups HF12 Solaris 11 Security13 Basic System Performance Tuning14 Solaris Virtualization15 Print Management16 DNS and DHCP17 Mail Services18 Mgmt of Trusted Extensions19 The Network File System 20 The FTP Server21 Solaris and Samba 22 Apache and the Web Stack Buy one today

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  • Getting Started with Oracle Fusion Governance, Risk and Compliance (GRC)

    Designed from the ground-up using the latest technology advances and incorporating the best practices gathered from Oracle's thousands of customers, Fusion Applications are 100 percent open standards-based business applications that set a new standard for the way we innovate, work and adopt technology. Delivered as a complete suite of modular applications, Fusion Applications work with your existing portfolio to evolve your business to a new level of performance. In this AppCast, part of a special series on Fusion Applications, you hear about the unique advantages of Oracle Fusion Governance, Risk and Compliance and discover how Fusion GRC works with your existing applications investments.

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  • does class reference itself static anti pattern in prism

    - by Michael Riva
    I have an application and my desing approach look like this: class Manager { public int State; static Manager _instance = null; public static Manager Instance { get { return _instance; } set { if (_instance == value) return; _instance = value; } } public Manager() { State = 0; Instance=this; } } class Module1 { public void GetState() { Console.WriteLine(Manager.Instance.State); } } class Module2 { public void GetState() { Console.WriteLine(Manager.Instance.State); } } class Module3 { public void GetState() { Console.WriteLine(Manager.Instance.State); } } Manager class already registered in Bootstrapper like : protected override void ConfigureContainer() { base.ConfigureContainer(); Container.RegisterType<Manager>(new ContainerControlledLifetimeManager()); } protected override void InitializeModules() { Manager man= Container.Resolve<Manager>(); } Question is do I need to define my manager object as static in its field to be able to reach its state? Or this is anti pattern or bad for performance?

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  • Dashboard to aggregate Google Analytics, Facebook, YouTube etc tracking data?

    - by Richard
    I'd like to see as much tracking data as possible about my online presence, in one single dashboard - so views/conversions from Google Analytics data, the performance of my Facebook campaigns via the Insights API, views/clicks from my YouTube campaigns, etc. This could be as simple as a graph with time on the x-axis, and key indicators from each source on the y-axis (conversions from Analytics, likes on Facebook, views on YouTube, etc). The idea is that I can see customer engagement with each source, over time. I can write my own such dashboard easily enough, but I wondered if there was something off-the-shelf that already did this. Apologies if this isn't the right forum for such a question - would appreciate tips for the best place to ask.

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  • If you want to learn all about Exalogic in 6 minutes, watch this demo!

    - by Michael Palmeter (Exalogic PM)
    If you haven't seen the latest Exalogic demo, click here now. Our excellent marketing organization has recently produced a new 6-minute flash demo that describes the Exalogic Infrastructure-as-a-Service management UI.  After years of investment in this product we are now in the final stages of delivering on the complete private-cloud-in-a-box vision that Larry Ellison announced back at Oracle OpenWorld 2010.  This demo video (flash) does the best job yet of explaining what is so great about Exalogic and why it is going to drive transformation of our industry.  If you haven't seen it yet, take a look.  There's much more to Exalogic now than just blazing performance.

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  • Futures/Monads vs Events

    - by c69
    So, the question is quite simple: in an application framework, when performance impact can be ignored (10-20 events per second at max), what is more maintainable and flexible to use as a preferred medium for communication between modules - Events or Futures/Promices/Monads ? Its often being said, that Events (pub/sub, mediator) allow loose-coupling and thus - more maintainable app... My experience deny this: once you have more that 20+ events - debugging becomes hard, and so is refactoring - because it is very hard to see: who, when and why uses what. Promices (i'm coding in javascript) are much uglier and dumber, than Events. But: you can clearly see connections between function calls, so application logic becomes more straight-forward. What i'm afraid. though, is that Promices will bring more hard-coupling with them... p.s: the answer does not have to be based on JS, experience from other functional languages is much welcome.

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  • Google I/O 2012 - What's Next for Chrome Extensions?

    Google I/O 2012 - What's Next for Chrome Extensions? Mike West Chrome's extension system offers developers more opportunities than ever to customize and enhance users' experience on the web. New APIs are landing on a regular basis that provide new functionality and deeper hooks into Chrome itself. Join us for a walk through bleeding edge changes to Chrome's extension framework that increase security, improve performance, and make it easier than ever for users to get up and running with the product of your hard work. For all I/O 2012 sessions, go to developers.google.com From: GoogleDevelopers Views: 1372 29 ratings Time: 51:36 More in Science & Technology

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  • Windows Azure CDN(Content Delivery Network)

    - by kaleidoscope
    Windows Azure CDN caches your Windows Azure blobs at strategically placed locations to provide maximum bandwidth for delivering your content to users. You can enable CDN delivery for any storage account via the Windows Azure Developer Portal. The CDN provides edge delivery only to blobs that are in public blob containers, which are available for anonymous access. Windows Azure CDN has 18 locations globally (United States, Europe, Asia, Australia and South America) and continues to expand. The benefit of using a CDN is better performance and user experience for users who are farther from the source of the content stored in the Windows Azure Blob service. In addition, Windows Azure CDN provides worldwide high-bandwidth access to serve content for popular events. Current CDN locations in US. For more details please refer to the link.  http://blogs.msdn.com/windowsazure/archive/2009/11/05/introducing-the-windows-azure-content-delivery-network.aspx Sarang

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  • eSeminar ISV Partner Update: High Quality Reporting for Your Applications

    - by Mike.Hallett(at)Oracle-BI&EPM
    Play eSeminar Duration: 18 Minutes         Description: This webinar presents to ISV Partners Oracle’s latest release of BI Publisher, and describes how this tool can make their applications more competitive and appealing to their customers by providing High Quality Reporting and Business Intelligence embedded into their solution. • BI Publisher can Provide All Reports… at Lower Cost • Easier, with Better Developer Productivity • Better Managed : Better Performance, Less Administration • Highest Quality : Pixel Perfect and Interactive Reporting. Play eSeminar (Only accessible to Oracle Partners).

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