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  • How do I draw a scrolling background?

    - by droidmachine
    How can I draw background tile in my 2D side-scrolling game? Is that loop logical for OpenGL es? My tile 2400x480. Also I want to use parallax scrolling for my game. batcher.beginBatch(Assets.background); for(int i=0; i<100; i++) batcher.drawSprite(0+2400*i, 240, 2400, 480, Assets.backgroundRegion); batcher.endBatch(); UPDATE And thats my onDrawFrame.I'm sending deltaTime for fps control. public void onDrawFrame(GL10 gl) { GLGameState state = null; synchronized(stateChanged) { state = this.state; } if(state == GLGameState.Running) { float deltaTime = (System.nanoTime()-startTime) / 1000000000.0f; startTime = System.nanoTime(); screen.update(deltaTime); screen.present(deltaTime); } if(state == GLGameState.Paused) { screen.pause(); synchronized(stateChanged) { this.state = GLGameState.Idle; stateChanged.notifyAll(); } } if(state == GLGameState.Finished) { screen.pause(); screen.dispose(); synchronized(stateChanged) { this.state = GLGameState.Idle; stateChanged.notifyAll(); } } }

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  • JDK8 New Build Infrastructure

    - by kto
    I unintentionally posted this before I verified everything, so once I have verified it all works, I'll updated this post. But this is what should work... Most Interesting Builder in the World: "I don't always build the jdk, but when I do, I prefer The New JDK8 Build Infrastructure. Stay built, my friends." So the new Build Infrastructure changes have been integrated into the jdk8/build forest along side the older Makefiles (newer in makefiles/ and older ones in make/). The default is still the older makefiles. Instructions can be found in the Build-Infra Project User Guide. The Build-Infra project's goal is to create the fastest build possible and correct many of the build issues we have been carrying around for years. I cannot take credit for much of this work, and wish to recognize the people who do so much work on this (and will probably still do more), see the New Build Infrastructure Changeset for a list of these talented and hard working JDK engineers. A big "THANK YOU" from me. Of course, every OS and system is different, and the focus has been on Linux X64 to start, Ubuntu 11.10 X64 in particular. So there are at least a base set of system packages you need. On Ubuntu 11.10 X64, you should run the following after getting into a root permissions situation (e.g. have run "sudo bash"): apt-get install aptitude aptitude update aptitude install mercurial openjdk-7-jdk rpm ssh expect tcsh csh ksh gawk g++ build-essential lesstif2-dev Then get the jdk8/build sources: hg clone http://hg.openjdk.java.net/jdk8/build jdk8-build cd jdk8-build sh ./get_source.sh Then do your build: cd common/makefiles bash ../autoconf/configure make We still have lots to do, but this is a tremendous start. -kto

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  • Ubuntu update deleted entries from grub

    - by Kevin
    My computer currently has Fedora, Ubuntu, and Windows installed. I just updated Ubuntu 12.04, and on restarting, the Fedora entry was gone from GRUB. Ubuntu and Windows remained, though. I have looked at these threads: Fedora login gone after Ubuntu updates on a dual boot http://forums.fedoraforum.org/showthread.php?t=279221 GRUB's menu.lst deleted after a kernel update However, I cannot figure out how to mount the drive as suggested. It does not appear in the list on the left side of nautilus as shown in the links above. I also tried running the following as suggested above: sudo grub-install /dev/sdX sudo update-grub But this gave scary errors: /usr/sbin/grub-setup: warn: Attempting to install GRUB to a partitionless disk or to a partition. This is a BAD idea.. /usr/sbin/grub-setup: warn: Embedding is not possible. GRUB can only be installed in this setup by using blocklists. However, blocklists are UNRELIABLE and their use is discouraged.. /usr/sbin/grub-setup: error: will not proceed with blocklists. The highlighted drive below is where Fedora lives. Thanks for any help reversing Ubuntu's decision to delete this from GRUB.

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  • Visual Studio 2012 first impressions...no Macros!

    - by bconlon
    Yesterday I installed Microsoft Visual Studio 2012 for the first time (all 8.5GB) and after 20 years of (mostly) happy times using VS they have removed Macros, one of the most handy features.The first thing I wanted to do when I upgraded my VS2010 project was to add a #elseif block to each file. This would usually be simple case of find in files of the previous #elseif and then Ctrl+Shift+R to record a macro which would be: F8 (to select the next file from find list), F3 (to find the correct position in file), Ctrl+V to paste the new code. Then all I would need to do is keep Ctrl+Shift+P (Play Macro) pressed until all the files were processed.But alas Ctrl+Shift+R does nothing! I won’t say that I use Macros every day but it was a very useful feature.To continue my moaning a little more, I also don't like the bland interface. This has been well documented by others, but now I have used it myself, I find it difficult to tell one grey area of screen from another and the lack of colour makes the icons unclear.I also don't see why the menus now need to SHOUT in capital letters?On the plus side, they have now added the ability to see WPF properties in the debugger...a bit of an oversight in Visual Studio 2010. Oh, but you still can't edit and continue on files that contain templated code.Whilst Visual Studio 2012 is not a complete disaster like Windows 8 (why develop a desk top OS to be the same as a Smart device OS), it does not float my boat.Rant over.#

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  • Estimate angle to launch missile, maths question

    - by Jonathan
    I've been working on this for an hour or two now and my maths really isn't my strong suit which is definitely not a good thing for a game programmer but that shouldn't stop me enjoying a hobby surely? After a few failed attempts I was hoping someone else out there could help so here's the situation. I'm trying to implement a bit of faked intelligence when the A.I fires it's missiles at a target in a 2D game world. By predicting the likely position the target will be in given it's current velocity and the time it will take the missile to reach it's target. I created an image to demonstrate my thinking: http://i.imgur.com/SFmU3.png which also contains the logic I use for accelerating the missile after launch. The ship that fires the missile can fire within a total of 40 degree angle, 20 either side of itself, but this could likely become variable. My current attempt was to break the space between the two lines into segments which match the targets width. Then calculate the time it would take the missile to get to that location using the formula. So for each iteration of this we total up the values and that tells us the distance travelled, ad it would then just need compared to distance to the segment. startVelocity * ((startVelocity * acceleration)^(currentframe-1) So for example. If we start at a velocity of 1f/frame with an acceleration of 0.1f the formula, at frame 4, would be 1 * (1.1^3) = 1.331 But I quickly realized I was getting lost when trying to put this into practice. Does this seem like a correct starting point or am I going completely the wrong way about it? Any pointers would help me greatly. Maths really isn't my strong suit so I get easily lost in these matters and don't even really know a good phrase to search for with this. So I guess in summary my question is more about the correct way to approach this problem and any additional code samples on top of that would be great but I'm not averse to working out the complete code from helpful pointers.

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  • How to fix this navigation issue in my site?

    - by David
    First off I use webs.com for the creation of my site. I have a very basic layout. List of links of the left and content on the right with a heading up top. Now in my list of links every link is an article that I wrote, I have about 25 links going down the left hand side of my site. Problem is when I try out new themes that support horizontal navigation as opposed to vertical navigation I get either a messy overflow of links Or a link called "more" which lists the rest of the articles in a drop down-list across my site. What I wish I had was a simple horizontal navigation like" "home, about, articles" and when the user clicks on articles it would then bring them to a page containing all my articles there. I would prefer it to be in a table like display. That way is not a long list. Anyways any ideas on how I can fix this issue im having? Please let me know if you need more information.

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  • Shooting Print Quality Pictures with a Camera Phone [Video]

    - by Jason Fitzpatrick
    Camera phones get a lot of grief for being underpowered but in this video tutorial the crew at SLR Lounge shows how basic technique and a good eye overcome all. Last year over at the photo blog FStoppers they put together a video showing off how you could use the iPhone as a fashion camera–essentially arguing that the camera wasn’t as important as the photographer. A lot of people said “Well yeah, but you had professional models and thousands of dollars in lighting equipment!” in reaction to the video. In turn the crew at SLR Lounge decided to make their own video showing that using only an iPhone camera and two reflectors (as well as an attractive but informal model). It of course helps to have some side kicks to help hold up your reflectors but the point still stands about modern camera phones being perfectly capable of good photos. The SLR Lounge iPhone Photo Shoot – A Follow Up Tribute to The FStoppers [YouTube] What is a Histogram, and How Can I Use it to Improve My Photos?How To Easily Access Your Home Network From Anywhere With DDNSHow To Recover After Your Email Password Is Compromised

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  • Overloading methods that do logically different things, does this break any major principles?

    - by siva.k
    This is something that's been bugging me for a bit now. In some cases you see code that is a series of overloads, but when you look at the actual implementation you realize they do logically different things. However writing them as overloads allows the caller to ignore this and get the same end result. But would it be more sound to name the methods more explicitly then to write them as overloads? public void LoadWords(string filePath) { var lines = File.ReadAllLines(filePath).ToList(); LoadWords(lines); } public void LoadWords(IEnumerable<string> words) { // loads words into a List<string> based on some filters } Would these methods better serve future developers to be named as LoadWordsFromFile() and LoadWordsFromEnumerable()? It seems unnecessary to me, but if that is better what programming principle would apply here? On the flip side it'd make it so you didn't need to read the signatures to see exactly how you can load the words, which as Uncle Bob says would be a double take. But in general is this type of overloading to be avoided then?

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  • Views : ViewControllers, many to one, or one to one?

    - by conor
    I have developed an Android application where, typically, each view (layout.xml) displayed on the screen has it's own corresponding fragment (for the purpose of this question I may refer to this as a ViewController). These views and Fragments/ViewControllers are appropriately named to reflect what they display. So this has the effect of allowing the programmer to easily pinpoint the files associated with what they see on any given screen. The above refers to the one to one part of my question. Please note that with the above there are a few exceptions where very similar is displayed on two views so the ViewController is used for two views. (Using a simple switch (type) to determine what layout.xml file to load) On the flip side. I am currently working on the iOS version of the same app, which I didn't develop. It seems that they are adopting more of a one-to-many (ViewController:View) approach. There appears to be one ViewController that handles the display logic for many different types of views. In the ViewController are an assortment of boolean flags and arrays of data (to be displayed) that are used to determine what view to load and how to display it. This seems very cumbersome to me and coupled with no comments/ambiguous variable names I am finding it very difficult to implement changes into the project. What do you guys think of the two approaches? Which one would you prefer? I'm really considering putting in some extra time at work to refactor the iOS into a more 1:1 oriented approach. My reasoning for 1:1 over M:1 is that of modularity and legibility. After all, don't some people measure the quality of code based on how easy it is for another developer to pick up the reigns or how easy it is to pull a piece of code and use it somewhere else?

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  • Another Exchange 2003 to Exchange 2010 mail flow issue

    - by Ryan Roussel
    During a migration recently, we came across another internal mail routing issue.  The symptoms were identical to my previous post about Exchange internal mail routing.  Mail was flowing from 2010 to 2003, from 2010 to the internet, but not from 2003 to 2010.   I went through the normal check list looking at permissions, DNS, and the routing group connectors.  I verified that both servers listed in the routing group connectors were the routing master in their respective routing groups through the 2003 ESM.  I also verified that inheritable permissions were enabled for the Exchange 2003 server object in the schema.  No luck with either.   For my previous post about this issue in which inheritable permissions were the culprit: Exchange 2010, Exchange 2003 Mail Flow issue   And for Routing Group issues: Exchange 2007 Routing Group Connector Mayhem   I finally enabled logging on the SMTP virtual server on Exchange 2003 and the Default Receive Connector on 2010 and sent a few test e-mails where I found 2003 was having issues authenticating to 2010.  By default 2003 uses Exchange Server Authentication to communicate to 2010. The exact error was: 4.7.0 Temporary Authentication Failure which was found in the SMTP logs on the Exchange 2003 side   After scouring based on this error, I found the solution:   The Access this computer from the network user rights in the local computer policy on the Exchange 2010 server were changed from the default.  The network administrator had modified the Default Domain policy and changed this user right assignment to only list Domain Users.   The fix was to clear this setting in the Default Domain policy,  force gpupdate to refresh the group policy settings, then ensure the appropriate users and groups were listed.   This immediately fixed the problem and the Exchange 2003 server was able to route mail to the Exchange 2010 mailboxes.   The default user rights assignments for Access this computer from the network On Workstations and Servers: Administrators Backup Operators Power Users Users Everyone On Domain Controllers: Administrators Authenticated Users Everyone More can be found here: http://technet.microsoft.com/en-us/library/cc740196(WS.10).aspx

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  • Using C++ but not using the language's specific features, should switch to C?

    - by Petruza
    I'm developing a NES emulator as a hobby, in my free time. I use C++ because is the language I use mostly, know mostly and like mostly. But now that I made some advance into the project I realize I'm not using almost any specific features of C++, and could have done it in plain C and getting the same result. I don't use templates, operator overloading, polymorphism, inheritance. So what would you say? should I stay in C++ or rewrite it in C? I won't do this to gain in performance, it could come as a side effect, but the idea is why should I use C++ if I don't need it? The only features of C++ I'm using is classes to encapsulate data and methods, but that can be done as well with structs and functions, I'm using new and delete, but could as well use malloc and free, and I'm using inheritance just for callbacks, which could be achieved with pointers to functions. Remember, it's a hobby project, I have no deadlines, so the overhead time and work that would require a re-write are not a problem, might be fun as well. So, the question is C or C++?

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  • #altnetseattle - Kanban

    - by GeekAgilistMercenary
    The two main concepts of Kanban is to keep the queues minimum and to maintain visibility. Management/leadership needs to make sure the Kanban Queue doesn’t get starved.  This is key and also very challenging, being the queue needs to be minimal but also can’t get too small during the course of work.  This is to maintain maximum velocity. Phases of the Kanban need to be kept flowing too, bottlenecks need removed ASAP when brought up. Victory Wall – I dig that idea.  Somewhere to look to see the success of the team. The POs work in Rally or other tools for some client management, but it causes issues with the lack of "visibility" – a key fundamental ideal & part of Kanban. One of the big issues is fitting things into a sprint, when Kanban is used with Scrum, but longer sprints are wasteful. Kanban work sizes are of a set size. At this point I got a bit side tracked by the actual conversation and missed out on note taking.  Overall, people doing Kanban and Lean Style Software Development I would say are some of the happiest coders around.  The clean focus, good velocity, sizing, and other approaches that are inferred by Kanban help developers be the rock stars and succeed. This is definitely a topic I will be commenting on a lot more in the near future.

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  • Maintaining Two Separate Software Versions From the Same Codebase in Version Control

    - by Joseph
    Let's say that I am writing two different versions of the same software/program/app/script and storing them under version control. The first version is a free "Basic" version, while the second is a paid "Premium" version that takes the codebase of the free version and expands upon it with a few extra value-added features. Any new patches, fixes, or features need to find their way into both versions. I am currently considering using master and develop branches for the main codebase (free version) along side master-premium and develop-premium branches for the paid version. When a change is made to the free version and merged to the master branch (after thorough testing on develop of course), it gets copied over to the develop-premium branch via the cherry-pick command for more testing and then merged into master-premium. Is this the best workflow to handle this situation? Are there any potential problems, caveats, or pitfalls to be aware of? Is there a better branching strategy than what I have already come up with? Your feedback is highly appreciated! P.S. This is for a PHP script stored in Git, but the answers should apply to any language or VCS.

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  • Leaving the field of programming. What are the options?

    - by hal10001
    A lot of graduates ask about getting into this field, but I know there are times when I (as well as many others) think about leaving, too. My issue is that I love solving problems and the act of creating something that people enjoy using, and that is what keeps bringing me back. Lately, though, programming has become less of the act of creation and about solving problems, and has become more about being "a monkey at a keyboard". Can you offer any advice with regard to: What fields would offer equivalent problem-solving challenges consistently? How you would go about doing the research, or considering the career change? Basically anything else you think would be helpful in this situation. EDIT: I guess I should clarify and say that I've been in the field about 10 years, and I have had my fair share of working environments. The place where I am at now, and even the previous two jobs, the people I worked with have been great. I've been very lucky in that respect. I'm beginning to wonder if the next step for me has little to do with actual programming and more to do with business analysis or strategic consulting. I would hate to get too much onto the business side of things though, as I like being around tech folks more.

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  • How much overhead is there in persistent connections?

    - by nynex
    Ok so I'm musing over a little side project I want to start. Essentially its a multi-session web based FTP client. Multi-session in that you can log into several FTP servers at the same time and perform operations like moving a file from one FTP server to another. I'm doing this mainly to brush up on the new webdev technologies, particularly websockets. I'm using node.js + socket.io to keep a persistent bi-directional connection between the web browser and the web server. The web server will also have persistent connections to each FTP server the user has logged into. So if there are 100 concurrent users each logged into 5 ftp accounts, the web server will have 100 websocket connections + 500 ftp connections. Is servicing 600 connections a lot? I know it depends on the hardware resources of the server but is something like this doable on a budget? Are there more efficient means of doing something like this? I know its unlikely that this project will really get popular but I want it to scale well regardless. Thanks for any help, I've still got a lot to learn.

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  • Restore Default Appearance in Ubuntu 12.04

    - by katya sehgal
    I'd like the original colour scheme, icon style of 12.04. I somehow lost the Ambiance theme (possible error or upgrade error). I re-installed 'light-themes' from the terminal and got it back. But the panel on the top that shows the options of sound, battery and wi-fi has changed and I can-not get the original setting back. In the windows, the close, minimize tools have shifted to the right instead of the original left side. I had installed MyUnity and Ubuntu Tweak but deleted them. As such, I want the original setting back. Kindly help me with the commands. I have searched for solutions; there are multiple and I need to be sure if I should follow the same. Kindly bear before marking duplicate. Discoveries *. [The appearance is gray and boxy as outlined here.] Not sure same problem. *. [Similar 'gray and boxy' article here] *. Desktop forgets theme.] *. I have also tried unity --reset command. It never completes. I gave it 20 minutes.

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  • Generic rule parser for RPG board game rules - how to do it?

    - by burzum
    I want to build a generic rule parser for pen and paper style RPG systems. A rule can involve usually 1 to N entities 1 to N roles of a dice and calculating values based on multiple attributes of an entity. For example: Player has STR 18, his currently equipped weapon gives him a bonus of +1 STR but a malus of DEX -1. He attacks a monster entity and the game logic now is required to run a set of rules or actions: Player rolls the dice, if he gets for example 8 or more (base attack value he needs to pass is one of his base attributes!) his attack is successfully. The monster then rolls the dice to calculate if the attack goes through it's armor. If yes the damage is taken if not the attack was blocked. Besides simple math rules can also have constraints like applying only to a certain class of user (warrior vs wizzard for example) or any other attribute. So this is not just limited to mathematical operations. If you're familiar with RPG systems like Dungeon and Dragons you'll know what I'm up to. My issue is now that I have no clue how to exactly build this the best possible way. I want people to be able to set up any kind of rule and later simply do an action like selecting a player and a monster and run an action (set of rules like an attack). I'm asking less for help with the database side of things but more about how to come up with a structure and a parser for it to keep my rules flexible. The language of choice for this is php by the way.

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  • How to proceed when a bug in open source libraries is suspected?

    - by Suma
    We are using some open source libraries in our projects. Sometimes there are some issues found in some of them (most likely library bugs, but it may also be a wrong usage from our side, especially when sometimes documentation is not exactly 100 % complete). As the libraries are often quite complex, debugging them to pinpoint the source of the problem is sometimes quite hard. Can you help me to summarize what other options are there and how to exactly proceed with them? I have just recently hit some strange problems when using TCMalloc (Google scalable memory allocator) on Windows, so I would most welcome answers which would apply to this particular library, but more general answers are good as well. 1) Ask the maintainer/owner of the project for assistance. How can this be done? 2) Hire someone to identify and fix the issue. How to do this? How can I find someone with enough expertise in some particular library? ... any other options?

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  • If you develop on multiple operating systems, is it better to have multiple computers + displays?

    - by dan
    I develop for iOS and Linux. My preferred OS is Ubuntu. Now my software shop (me and a partner) is developing for Windows too. Now the question is, is it more efficient to have multiple workstations, one for each target OS? Efficiency and productivity is a higher priority than saving money. I have a 3.4Ghz i7 desktop workstation running Ubuntu and virtualized Windows with two displays, and I'm putting together an even more powerful i7 Hackintosh with 16GB RAM (to replace my weak 2.2Ghz i5 Macbook Pro). My specific dilemma is whether I should sell the first computer and triple boot on the second one, or buy two more displays and run both desktop systems simultaneously. Would appreciate answers from developers who write software for multiple OSes. Running guest OSes in VirtualBox on one system not ideal, because in my experience performance is seriously degraded under virtualization. So the choice is between dual/triple booting on one system vs having two systems, one for OSX+iOS/Windows (dual boot) and the other for Ubuntu (which I prefer to use as my main OS). For much of our work, I write a server-side application in Linux and a client for iOS (or for Windows or OS X) simultaneously.

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  • How do i approach this collision model?

    - by PeeS
    this is the game level prototype i have already implemented. It has few objects per room to allow me to finally add some collision detection/response code into it. VIDEO As you can probably see, every object inside has it's own AABB, even the room itself has AABB. So a player is like 'inside the Room AABB'. My player will be exactly inside the room, so he would have to collide correctly with those AABBs, so that when he hits any of those objects inside he get's a proper collision response from those AABB's. Now i would like to hear from you what kind of collision approach should i choose in here? How do i approach this kind of stuff: AABB to AABB collision detection then when this is positive go with AABB - Tri to find proper plane normal and calculate response ? AABB to AABB then when positive go with AABB - AABB Side check to find proper proper plane normal and calculate response? Anything else? How do you do this ? Many thanks.

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  • Greeter login screen cropped login options in 12.04

    - by ammianus
    I have a pretty newly installed Ubuntu 12.04, using Unity. My external monitor is 1920x1080 max resolution. In the Unity desktop itself everything looks great. I have an NVidia graphics card. When I start my computer and get to the Unity greeter login screen the display is oddly formatted and the resolution seems off. It looks like a zoomed view on the larger 1920x1080 screen. As such it crops the login options off to the left hand side of the screen. So I can only just see the edge of the password box for the user I want to log in with. I can log in with one account by default by blindly typing the password, but I am unable to switch to other accounts. Is there anything I can do to fix the log in screen display so that I can see the normal login options? Note: I first noticed it when I changed my desktop background and the next time I logged in I saw the issue.

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  • The 2012 JAX Innovation Awards

    - by Janice J. Heiss
    A new article, now up on otn/java, titled “The 2012 JAX Innovation Awards” reports on  important Java developments celebrated by the Awards, which were announced in July of 2012. The Awards, given by S&S Media Group, aim to, "Reward those technologies, companies, organizations and individuals that make outstanding contributions to Java." The Awards fall into three categories: Most Innovative Java Technology, Most Innovative Java Company, and Top Java Ambassador. In addition, a finalist who did not win an award receives a Special Jury prize, "in acknowledgement of their unique contribution and positive impact on the Java ecosystem."The winners were: JetBrains for Most Innovative Java Company; Adam Bien as Top Java Ambassador; Restructure 101, created by Headway Software, as Most Innovative Technology; and Charles Nutter, Special Jury award. Each winner received a $2,500 prize. The five finalists in each category were invited to attend the JAX Conference in San Francisco, California. This year's winners each received a $2,500 prize. JetBrains Fellow, Ann Oreshnikova, listed her favorite JetBrains innovations: * Nullability annotations and nullability checker* CamelCase navigation and completion* Continuous Integration in grid (on multiple agents), in TeamCity* IntelliJ Platform and its language support framework* MPS language workbench* Kotlin programming languageWhen asked what currently excites him about Java, Adam Bien, winner of the Java Ambassador Award, expressed enthusiasm over the increasing interest of smaller companies and startups for Java EE. “This is a very good sign,” he said. “Only a few years ago J2EE was mostly used by larger companies -- now it becomes interesting even for one-person shows. Enterprise Java events are also extremely popular. On the Java SE side, I'm really excited about Project Nashorn.”Special Jury Prize Winner, Charles Nutter of Red Hat, remarked that, “JRuby seems to have hit a tipping point this past year, moving from ‘just another Ruby implementation’ to ‘the best Ruby implementation for X,’ where X may be performance, scaling, big data, stability, reliability, security, and a number of other features important for today's applications. Check out the complete article here.

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  • USB mouse pointer only moving horizontally on macbook 6.2 with 12.04

    - by Glyn Normington
    After installing Ubuntu 12.04 on a macbook pro 6.2, the touchpad and external USB mouse worked perfectly. After rebooting I can't get either touchpad or external USB mouse to work. Sometimes no mouse pointer is visible, but more often I can only move the mouse pointer horizontally five sixths of the way across the display (from the top left). I have uninstalled mouseemu. xinput list shows the USB mouse. xinput query-state for the USB mouse shows the following: ButtonClass button[1]=up ... button[16]=up ValuatorClass Mode=Relative Proximity=In valuator[0]=480 valuator[1]=2400 valuator[2]=0 valuator[3]=3 and re-issuing this command with the pointer at its right hand extreme displays the same except for: valuator[0]=1679 So the valuator[0] seems to be the x-coordinate of the pointer and the range of motion 480-1679 is indeed about five sixths of the display width (1440). valuator[1] is suspiciously large given the display height is 900. Perhaps this is a side-effect of having previously been using a dual monitor (although booting with that monitor connected does not help). There are other entries listed under xinput list: Virtual core XTEST pointer which seems stuck at position (840,1050). bcm5974 which seems stuck at position (837,6700). Removing the bcm5974 module using rmmod disables the toucpad as expected but does not fix the USB mouse problem. After adding the module back, it is stuck at position (840,1050) instead of (837,6700). /etc/X11/xorg.conf was generated by nvidia-settings and contains: Section "InputDevice" # generated from default Identifier "Mouse0" Driver "mouse" Option "Protocol" "auto" Option "Device" "/dev/psaux" Option "ZAxisMapping" "4 5" although I don't know how plausible these settings are. Any suggestions?

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  • How important is Domain knowledge vs. Technical knowledge?

    - by Mayank
    I am working on a Trading and Risk Management application and although from a C# background, I have been asked to work on SSIS packages. Now I can live with that. The pain point is that there is too much emphasis on business understanding. Trading (Energy Trading to be exact) is a HUGE area and understanding every little bit of it is overwhelming. But for the past two months I have been working on understanding the business terms - Mark To Market, Risk Metrics, Positions, PnL, Greeks, Instruments, Book Structure... every little detail (you get the point). Now IMHO, this is the job of a BA. Sure it is very important for developers to understand the business but where do you draw the line? When I talked to my manager about this, he almost mocked me by saying that anybody can learn a technology in a week. It's the business that's harder. My long term aspiration is to remain on the technical side, probably become an architect (if possible). If I wanted to focus so much on business I would have pursued an MBA! I want to know if I am wrong or too naive in understanding the business importance or is my frustration justified?

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  • HP Envy dv6t-7300: Disabled WiFi through button and can't enable it anymore

    - by Mateus B. Cassiano
    Well, I have a HP Envy dv6t-7300 laptop that came with a Ralink RT5390 WiFi card. Everything was working perfectly, and eventually I press the WiFi button in my keyboard to toggle the card on/off. Until today, all worked right: if the wifi was off (wifi LED amber) and I press the wifi button, after a few seconds the LED turn white and everything works. If I repeat the process, the wifi LED turn amber and the card get disabled, but now, I can't turn it on anymore. running sudo rfkill list all I get: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no 1: hp-wifi: Wireless LAN Soft blocked: no Hard blocked: yes So, I ran sudo rfkill unblock all but nothing changed. As a side note, if I run sudo ifconfig wlan0 up, the indicator LED gets white (indicating that the card was enabled), but Ubuntu still say that the card is blocked by hardware. Extra information: the card works without issues in windows and in Ubuntu installer (booting from a live CD). I'm using the card out-of-box, using the drivers already included in Ubuntu 12.10. The module rt2800pci is loaded and working fine, not blacklisted, etc, etc. The card and the button toggle worked flawlessly until today, when I toggled it off and can't turn it on anymore... The problem is back, but in a different manner: if I don't press the wifi key a few times during the grub loading, in the login screen the wifi button will be ambar (disabled), pressing it will toggle it white (enabled) or ambar (disabled) again, but ubuntu still says that the network card was disabled by hardware and doesn't connect... In other words, if I don't press the WiFi button a few times when Ubuntu is booting, it will be stuck with the "network card was disabled by hardware" message, even if the light is white (enabled). Any clue? Maybe a error in some startup script or config file?

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