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  • Last chance to see ... Virtualisation for Developers at NxtGenUG Cambridge, Tuesday 14th December

    - by Liam Westley
    As a farewell to 2010 I'm also saying farewell to presenting my Virtualisation for Developers and Hyper-V for Developers presentations with a final outing at NxtGenUG in Cambridge (my first visit to a user group in The Fens). I may have some homemade nibbles and party stuff to liven up the evening, and a certain Rachel Hawley has suggested a santa hat might be appropriate too. It's going to be a fun night. Sign up details are available here,   http://www.nxtgenug.net/ViewEvent.aspx?EventID=353 And for those of you who can't make this last outing, I am planning on converting both presentations into a series of blog posts so the content will be available to a wider audience.  If the posts don't seem to be appearing fast enough drop me an e-mail to remind me to get on with it !

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  • How do I efficiently generate chunks to fill entire screen when my player moves?

    - by Trixmix
    In my game I generate chunks when the player moves. The chunks are all generated on the fly, but currently I just created a simple flat 8X8 floor. What happens is that when he moves to a new chunk the chunk in the direction of the player gets generated and its neighboring chunks. This is not efficient because the generator does not fill the entire screen. I did try to use recursion but its not as fast as I would like it to be. My question is what would be an efficient way of doing so? How does minecraft do so? When I say this I mean just the way it PICKS which chunks to generate and in what order. Not how they generate or how they are saved in regions, just the order/way it generates them. I just want to know what is a good way to load chunks around the player.

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  • Oracle Customer Experience (CX) Solutions Make Retailers Merry

    - by Tuula Fai
    Tis the season to be jolly. If you’re a retailer, your level of jolliness depends on sales. So you watch trends like U.S. store traffic increasing 3.5% to 308 million on Black Friday but sales actually falling 1.8% to $11.2 billion. Fortunately, by the end of November, retail sales were up 3.7% over the previous year, thanks to life recovering after Hurricane Sandy. And online sales topped $1 billion for the first time ever! Who are the companies improving their sales online? They are big names like Walgreen’s Drugstore.com, Nordstrom’s HauteLook, and Intuit. More importantly, how are they doing it? They use cutting-edge business practices enabled by Oracle’s CX Cloud Service & Support solutions to: Increase conversions rates and order sizes (Customer Acquisition) Enhance customer satisfaction and loyalty (Customer Retention) Reduce contact center costs and improve agent productivity (Operational Efficiency). Acquisition + Retention + Operational Efficiency = Sustainable Growth and Profits. That’s the magic formula for retail customer service success. Don’t take our word for it. Look at the results of these Oracle customers: Walgreen’s Drugstore—30% sales conversion rate on chat sessions with 20% increase in shopping cart size Nordstrom’s HauteLook—40,000+ interactions per month—20% growth over last year— efficiently managed by 40 agents, with no increase in IT costs Intuit—50% increase in customer satisfaction and 70% decrease in cost per interaction Using Oracle’s CX Cloud & Service solutions, these retailers deliver consistent, relevant, and personalized experiences across all touchpoints, including social, mobile, and web. Their ability to connect with customers anytime, anywhere—providing the right answer at the right time—helps them create a defensible advantage in the marketplace. Want to learn more? Please visit http://www.oracle.com/goto/cloudlaunchpad for free resources on delivering exceptional customer service in the Cloud. Also, watch our YouTube channel to learn more about seamless multichannel retail and Winston Furnishings’ exceptional customer experience.

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  • Finding inspiration / help for making up (weapon) names

    - by Rookie
    I'm really bad with words, especially with English words. Currently I'm struggling to make a good weapon names for my game, it needs to display the weapon functionality (weak/strong/fast/ballistic etc) correctly as well. For example the best weapon in a (futuristic) game cannot be called just with the name "Laser", it's just too boring, right? Are there any tools, websites or anything that helps me finding good names for weapons? (or anything else similar). I was thinking to use scientific names, but noticed that they are really hard to write, and they get very long, and I also lack information about science, I only know I could use the atomic sub-particles names in the weapons for example. How do I get started with becoming good with making up names? (this could apply in generally to any naming problems).

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  • Why is Backbone.js a bad option in the Technology radar 2012 of thoughtworks?

    - by Cfontes
    In the latest Technology Radar 2012 they state that Backbone.js has pushed to far on it's MVC abstraction and say that Knockout.js or Angular.js should be used instead. I cannot get why they think that Backbone.js model is bad, for me it's just a way to create a standard so people can have some kind of roadmap to dev frontend JS without Spaghetti code. Also for me Angular and Knockout solve a different problem, I like both of them but having to code all MVC classes is something I think is kind of a rework. The thing is simple easy extendable and fast to learn, comes with a lot of goodies and is easy to combine with other Frameworks. (see Knockback.js) Can anybody tell me what made it so bad to their eyes ?

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  • How can I make KDE faster in Ubuntu 12.04. It's very slow

    - by Rizwan Rifan
    I installed the kubuntu-desktop package in Ubuntu 12.04 LTS, but the problem is KDE responses very slowly. If I click on an application's icon to run it, it appears after 10 seconds and sometimes does not appear at all. It hangs all the time. The cursor is almost impossible to follow because of the lag. I have read on the Internet that Unity uses more memory and CPU than KDE. But on my PC Unity runs smoothly and KDE does not. So what should I do to make KDE as fast, responsive and smooth as Unity? My specifications are as follows: RAM: 1.5 GB (DDR2) Processor: 3 GHz Dual Core Graphics Card: Intel HD graphics with 256 MB memory.

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  • Whats the Quickest and Cheapest Solution to setup a Affiliate Program for an Online Product?

    - by szahn
    I have a simple HTML landing page setup for an online product I want to sell. This product is a hardcover book. I want to be able to allow other people to setup their own landing pages and make a percentage of the sale from their site. What are some good payment processors or payment gateways that make setting up an affiliate system easy and fast? Clarification - When someone purchases an item, I want (whatever the payment processor is) to automatically route a percentage of that payment to the affiliate and the rest to the original author.) Are there any payment frameworks that already do this? I've found a few sites that let you do this, but they seem to restrict you to digital purchases only. However, my sites is selling a ship-able product and the affiliate system needs to support this.

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  • Google I/O 2012 - High Performance HTML5

    Google I/O 2012 - High Performance HTML5 For years we built web apps that far outpaced the capabilities of the browsers they ran in. Just as the browsers were catching up HTML5 came on the scene - video and audio, canvas, SVG, app cache, localStorage, @font-face, and more. Now the browsers are racing to stay ahead of the wave that's building as developers adopt these new capabilities. Is your HTML5 app going to ride the wave or be dashed on the rocks leaving users stranded? Learn which HTML5 features to seek out and which to avoid when it comes to building fast HTML5 web apps. This session will be live captioned. From: GoogleDevelopers Views: 91 1 ratings Time: 01:02:07 More in Science & Technology

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  • Designing call center applications, what to consider.

    - by Espen Schulstad
    We have customers calling in to place orders. What sort of considerations should I make when building a call center application. Speed is a factor here. We had a powerbuilder application that was extremly fast for a trained user. We want to have the same sort of speed in our new production system. So some thoughts I've made are: Hotkeys are important. Is it faster to use a "wizard", step by step, or should I try to place everything important about the order logically on one sceen and have another screen where you do all searches, pertinent for that order?

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  • Time tracker for lxde

    - by deshmukh
    I have only recently started using lxde. And I am liking it. It is blazing fast, not-at-all resource hungry and just does what I want. The only thing I am missing is a time tracker tool. I have been using Hamster Time Tracker on gnome for quite some time. In lxde, I can still launch the application. But there are no reminders when the time limit is up, etc. The time tracker is just another window. Is there any way to get hamster working in lxde with notifications for time-up and an icon in the panel, etc.? Alternatively, is there another application like Hamster that will do all that Hamster does and WORKS in lxde?

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  • Can't login after forced shutdown

    - by user1205935
    I am on ubuntu 12.04 and forced a shutdown (hardware switch). Now I can't login anymore. In particular, after entering my password I get sent back to the login screen. The error message is to fast for me to read. I am, however, able to login into the Guest account through the usual login screen, and able to login into my own account on tty1 after pressing Ctrl+Alt+F1. What should I try to get back into my own account via the login screen and get back to a working desktop? Update: I can login with gdm, but not with the (default) lightdm. So the forced shutdown seems to have broken lightdm. The question now is, how do I fix a broken lightdm?

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  • Why is my ruby application running faster the second time?

    - by Omega
    I'm creating a Ruby game using the Gosu framework. All good. Sometimes, when I run the game, it has some kind of slow startup, and probably it will be rather slow during the whole game. So I close it and... open it again. It is very likely that it will startup quickly and the whole game will run smoothly and fast. Why is that? What is this phenomenon? Is it faster because of some cache stored or whatever since the first run? (But why would cache be stored? If the app dies, I would expect no references at all etc...) Ruby, Windows 7.

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  • How to Create and Use Templates in Outlook 2010

    - by Taylor Gibb
    If you reply to the emails with the same answer over and over, it will save you a lot of time to create a template that you can use over and over. We have previously show you how to create templates in Outlook 2003, so lets take a look at using Outlook 2010. When creating a template you get started as if you were creating a new email, that is choose new email from the Home tab. You can now draft your email as normal. HTG Explains: When Do You Need to Update Your Drivers? How to Make the Kindle Fire Silk Browser *Actually* Fast! Amazon’s New Kindle Fire Tablet: the How-To Geek Review

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  • What are good ways to find collaborators for a coding weekend?

    - by tarrasch
    Not sure if this belongs here, feel free to push it somewhere else if needed. When i was at university we would sometimes come together into a room full of beer and fast food and crank out software in a weekend. Unfortunately the group has kind of split up and its just not possible any more. My question is now: Where can i find like-minded people on the Internet that would like to do something like this? I have an idea what i wanted to do next, but of course other people have ideas too.

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  • Web api authentication techniques

    - by Steve
    We have a asp.net MVC web service framework for serving out xml/json for peoples Get requests but are struggling to figure out the best way (fast, easy, trivial for users coding with javascript or OO languages) to authenticate users. It's not that our data is sensitive or anything, we just want users to register so we can have their email address to notify them of changes and track usage. In our previous attempt we had the username in the URI and would just make sure that username existed and increment db tables with usage. This was super basic but we'd notice people using demo as a username etc so we need it to be a little more sophisticated. What authentication techniques are available? What do the major players use/do.

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  • Ubuntu Gnome 14.04 - 100% CPU usage alternating between cores

    - by AwDeOh
    I've noticed my Ubuntu Gnome 14.04 has been getting a bit sluggish lately - things like Gnome Shell overview animation are jerky where they were lightning fast, Elder Scrolls Online is stuttering and dropping to low FPS where I previously had a solid 50-60 fps. Out of interest I looked at the CPU History, and when running nothing but the system monitor, I was getting this: That was 15 minutes ago. The 100% load seemed to be alternating between the cores. PC specs: i3 2130 processor. 8gb DDR3 RAM. ASUS P8-Z77M motherboard. Samsung 128gb SSD I've been trying to reproduce the problem, and while I'm not getting the 100% any more at idle, the system monitor is showing an average load of about 20-30%, that's with just Chrome and the System Monitor open. Oddly, if I touch nothing, it'll average out to about 20% - if I start moving the mouse around and do some typing, it's closer to 40%. Is this normal? Any help appreciated, I wouldn't even know where to start here..

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  • Efficient way of detecting a touched object in a game?

    - by Pin
    Imagine a Sims-like 2D game for a touch based mobile phone where one can interact with virtually any object in the scene. How can I efficiently detect which object is being touched by the player? In my short experience, looping through all the visible objects in the scene and checking if they're touched has so far done the job, but when there may be many many moving objects in the screen that sounds kind of inefficient isn't it? Keeping the visible moving objects list can consume time in itself as one may have to loop through all of them each frame. Other solutions I've thought are: Spatial hashing. Divide the screen as a grid and place the visible objects in the corresponding bucket. Detection of the clicked object is fast but there's additional overhead for placing the objects in the correct bucket each frame. Maintaining a quad-tree. Moving objects have to be rearranged all the time, the previous solution looks better. What is usually done in this case?

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  • Can I host a high traffic website at home?

    - by eric01
    I've been searching this up on google but I can't formulate my google search with the right terms to find an accurate answer to my question. Is it possible to have a super-fast connection at home to host a high traffic website? What is the generic term for that kind of connection? What's the major drawback of hosting at home? (I have no idea of the price range but it's probably quite expensive) Do you have to be a company to have the right to own such a connection?

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  • Bursts of white noise sound when playing videos

    - by Dave M G
    I've recently freshly reinstalled Ubuntu, and Mythbuntu, on all my computers. On one of my computers, Mythbuntu 11.10, when I play a video, when it starts, I get a burst of white noise (static) that stays on. If I stop the video and restart it, the noise goes away. Sometimes if I fast forward or manipulate the video, the noise will start. It seems to be initiated, and stopped, by starting or interacting with the video. Any ideas as to why this is happening and how I can get rid of it?

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  • Google I/O 2012 - Breaking the JavaScript Speed Limit with V8

    Google I/O 2012 - Breaking the JavaScript Speed Limit with V8 Daniel Clifford Are you are interested in making JavaScript run blazingly fast in Chrome? This talk takes a look under the hood in V8 to help you identify how to optimize your JavaScript code. We'll show you how to leverage V8's sampling profiler to eliminate performance bottlenecks and optimize JavaScript programs, and we'll expose how V8 uses hidden classes and runtime type feedback to generate efficient JIT code. Attendees will leave the session with solid optimization guidelines for their JavaScript app and a good understanding on how to best use performance tools and JavaScript idioms to maximize the performance of their application with V8. For all I/O 2012 sessions, go to developers.google.com From: GoogleDevelopers Views: 3049 113 ratings Time: 47:35 More in Science & Technology

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  • 2D Smooth Turning in a Tile-Based Game

    - by ApoorvaJ
    I am working on a 2D top-view grid-based game. A ball that rolls on the grid made up of different tiles. The tiles interact with the ball in a variety of ways. I am having difficulty cleanly implementing the turning tile. The image below represents a single tile in the grid, which turns the ball by a right angle. If the ball rolls in from the bottom, it smoothly changes direction and rolls to the right. If it rolls in from the right, it is turned smoothly to the bottom. If the ball rolls in from top or left, its trajectory remains unchanged by the tile. The tile shouldn't change the magnitude of the velocity of the ball - only change its direction. The ball has Velocity and Position vectors, and the tile has Position and Dimension vectors. I have already implemented this, but the code is messy and buggy. What is an elegant way to achieve this, preferably by modification of the ball's Velocity vector by a formula?

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  • Looking for the better way to combine deep architecture refactoring with feature based development

    - by voroninp
    Problem statement: Given: TFS as Source Control Heavy desktop client application with tons of legacy code with bad or almost absent architecture design. Clients constantly requiring new features with sound quality, fast delivery and constantly complaining on user unfriendly UI. Problem: Application undoubtedly requires deep refactoring. This process inevitably makes application unstable and dedicated stabilization phase is needed. We've tried: Refactoring in master with periodical merges from master (MB) to feature branch (FB). (my mistake) Result: Many unstable branches. What we are advised: Create additional branch for refactoring (RB) periodically synchronizing it with MB via merge from MB to RB. After RB is stabilized we substitute master with RB and create new branch for further refactoring. This is the plan. But here I expect the real hell of merging MB to RB after merging any FB to MB. The main advantage: Stable master most of the time. Are there any better alternatives to the procees?

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  • WF4 &ndash; It has suddenly got interesting

    - by MarkPearl
    I was at Teched two years ago when one of the Microsoft leads said there were three new area’s that we needed to pay attention to for development, namely: WPF WCF WF At the time I was just getting back into development work and had a look at WPF and immediately was sold on the approach. While I haven’t been to involved with WCF directly, I know that some of the guys in my dev team have been and that it too was a success. So what happened to WF? It seemed clunky, and all the demo’s that I saw of it left me scratching my head wondering how if it was going to be useful. Fast forward two years later and while I have had a brief look at WF4, I can immediately see areas where we can use the technology. Does that mean that I think WF4 is the bees knees? I don’t know enough about it yet to really have a solid opinion, but I do think that it is finally going in the right direction. A good introduction to WF4 can be found here.

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  • Dynamic Jump spot

    - by Pasquale Sada
    I have an initial velocity V(Vx,Vy,VZ) and a spot where he stands still at S(Sx,Sy,Sz). What I'm trying to achieve is a jump on a spot E(Ex,Ey,Ez) where you have clicked on(only lower or higher spot, because I've in place a simple steering behavior for even terrains). There are no obstacle around. I've implemented a formula that can make him jump in a precise way on a spot but you need to declare an angle: the problem arise when the selected spot is straight above your head. It' pretty lame that the char hang there and can reach a thing that is 1cm above is head. I'll share the code I'm using: Vector3 dir = target - transform.position; // get target direction float h = dir.y; // get height difference dir.y = 0; // retain only the horizontal direction float dist = dir.magnitude ; // get horizontal distance float a = angle * Mathf.Deg2Rad; // convert angle to radians dir.y = dist * Mathf.Tan(a); // set dir to the elevation angle dist += h / Mathf.Tan(a); // correct for small height differences // calculate the velocity magnitude float vel = Mathf.Sqrt(dist * Physics.gravity.magnitude / Mathf.Sin(2 *a)); return vel * dir.normalized;

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  • Review before or after code commit, which is better?

    - by fifth
    Traditionally we performed code review before commit, I had an argument with my colleague today, who preferred code review after commit. First, here's some background, we got some experienced developers and we also got new hires with almost zero programming practice. we'd like to perform fast and short iterations to release our product. we all team members locate at same site. The advantages of code review before commit I've learned, mentor new hires try to prevent errors, failures, bad designs in early developing cycle learn from others knowledge backup if someone quits But I also got some bad experience, like low efficiency, some changes may be reviewed over days hard to balance speed and quality, especially for newbies some guy felt distrust As to post-review, I just knew little about this, but the most thing I worried about is the risk of losing control, people never review. Any opinions?

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