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• How to implement a birds eye view of 2D Grid Map using Android

  - by IM_Adan

  I'm a true beginner with using the android platform and I'm having difficulties on implementing a 2D grid system for a tower defense type game. Where I can place towers on a specific tile and enemies will be able to traverse through tiles etc. What I would like is a practical explanation of how I could tackle this. A step by step guide for dummies. This is what I believe are the necessary steps to take, I think I might be wrong but I hope someone could help me out. Calculate the Width and Height of the view I'm working with. Based on that, determine the number of tiles required and their dimensions, (Still not sure how I would do this) Create each tile as a Rectangle object and draw these rectangle on a canvas I would really be grateful if someone could steer me in the right direction on how to implement a 2D Grid Map using android. I hope the answer to this questions helps the TRUE beginners out there like me. I have looked at the following links below yet I still feel that I don't trully understand what's going on. For XNA: 2D Grid based game - how should I draw grid lines? How to Create a Grid for a 2D Game? Also a quick note: All my previous game development has been in Java, mostly using Java SE and Swing. I also have good understanding of the game development process, it is only android thats confusing me :S

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• How can we make agile enjoyable for developers that like to personally, independently own large chunks from start to finish

  - by Kris

  We’re roughly midway through our transition from waterfall to agile using scrum; we’ve changed from large teams in technology/discipline silos to smaller cross-functional teams. As expected, the change to agile doesn’t suit everyone. There are a handful of developers that are having a difficult time adjusting to agile. I really want to keep them engaged and challenged, and ultimately enjoying coming to work each day. These are smart, happy, motivated people that I respect on both a personal and a professional level. The basic issue is this: Some developers are primarily motivated by the joy of taking a piece of difficult work, thinking through a design, thinking through potential issues, then solving the problem piece by piece, with only minimal interaction with others, over an extended period of time. They generally complete work to a high level of quality and in a timely way; their work is maintainable and fits with the overall architecture. Transitioning to a cross-functional team that values interaction and shared responsibility for work, and delivery of working functionality within shorter intervals, the teams evolve such that the entire team knocks that difficult problem over. Many people find this to be a positive change; someone that loves to take a problem and own it independently from start to finish loses the opportunity for work like that. This is not an issue with people being open to change. Certainly we’ve seen a few people that don’t like change, but in the cases I’m concerned about, the individuals are good performers, genuinely open to change, they make an effort, they see how the rest of the team is changing and they want to fit in. It’s not a case of someone being difficult or obstructionist, or wanting to hoard the juiciest work. They just don’t find joy in work like they used to. I’m sure we can’t be the only place that hasn’t bumped up on this. How have others approached this? If you’re a developer that is motivated by personally owning a big chunk of work from end to end, and you’ve adjusted to a different way of working, what did it for you?

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• The road to become a programmer [closed]

  - by user68991

  I'm looking for a 'career' change, I don't actually have a career at the moment since I haven't been able to find a job since I graduated with a degree in Materials Engineering. One of my loves has always been computers and programming, though I have never studied it seriously. When I was 11 I wrote a very basic graphical 'game' using notepad and HTML, where I drew each possible position of the main character on the different 'maze' level in MSPaint, using pictures of arrows as links to a new page with the character in a new position, and various other buttons would pop up 'search box', 'press button' etc. At the time I thought this was an amazing achievement of my programming skills. I've used a little bit of FORTRAN 90 whilst I was at university, which rekindled my interest in programming. When I was a kid I mainly used C and HTML, but only very basically as my 'game' suggests. I want to learn a new programming language, I'm not entirely sure where I want to go with it, but the number one contender at the moment is android apps. I'm looking at learning Java, but I've read that it's a difficult place to begin with; so I've also looked at learning Visual Basic, which I believe is also object oriented(?) but a little easier to understand? (not that I know what an object is anyway). Any information people could give me regarding which language to learn, and if there are any good online tutorial for that language I'd really appreciate it. Some of the tutorials I've used so far are full or jargon I can't understand. Also, I'm not afraid of maths having got an engineering degree. Thanks in advance for any help/advice. James

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• Metacity malfunction preventing custom Gnome session from launching?

  - by QuietThud

  When I try to run Metacity in Ubuntu2D(12.04), I get the following message: alisa@ubuntu:~$ metacity Window manager warning: Screen 0 on display ":2.0" already has a window manager; try using the --replace option to replace the current window manager. I get the same message when running Compiz from the command line in 3D (it opens fine through the GUI (same thing for AWN)). I understand that these should be the default managers for the respective sessions. I'm trying to create a custom Gnome session using the following instructions: unity launcher-free session. Here is what I've put into my .session file: [GNOME Session] Name=Custom Unity2D Session RequiredComponents=gnome-settings-daemon; RequiredProviders=windowmanager;panel; DefaultProvider-windowmanager=metacity DefaultProvider-panel=unity-2d-panel FallbackSession=ubuntu-2d DesktopName=GNOME Since I'm having problems identifying my default, and the code refers to Metacity, I figured this may be relevant to my inability to load the custom session (it shows up on my login screen, but won't launch). I tried specifying Metacity as my default manager by adding exec metacity to the .xinitrc file, and I tried running metacity --replace, but neither worked. How do I determine my current default window manager, what should the default be, and how do I re-assign it? Also, please let me know if you think there may be other issues affecting my custom session. I am new to Linux, so list anything you think might be helpful. Thank you!

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• Newbie seeking advice on programming in general

  - by user974685

  need some of you to remember back to a time when you might have been bad at programming... Been at my new job (as a software developer) for a couple of months now, passed probation period. Have very little programming experience (C++ only) and am currently working with asp.net MVC and silverlight. So there's a website the company has been working on and I am joining the effort to make it better, iron out bugs etc. The problem is - learning about a system/website which has already been made, via visual studio. I ALWAYS feel HUGELY overwhelmed, never knowing which part of this line should I look up, and generally having lots of trouble getting the big picture. Visual studio itself is something I'm finding it difficult to get to grips with, let alone the asp.net framework. I get the impression that because my coworkers have more experience than me, they are getting all the good jobs, and I am left with crap to do - stuff which is not even vaguely programming. Meaning they are learning/creating more, and I am learning/creating near nothing. I'm getting demoralised, and too scared to say anything. I'm not stupid, I've read and practiced plenty of the fundamental programming concepts...I'm just bloody scared of this damn framework. I look at it and just feel paralyzed. The result is that I keep asking the older veteran guy of questions, and he is getting irritated, and would rather give me easy/mindless/non programming jobs to avoid wasting time with helping me out. Then when I don't understand something, I'm hesitating about whether or not I should ask him yet, and trying to decide if it would be a waste of time. I'm the kind of person who picks things up slowly, but with a lot of attention to detail. The former I think is making me look incompetent though. Anyone get where I'm coming from please say something helpful....I'm scared of losing my job in a few months or something...

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• Accessing host LVM partition from Windows XP through Virt.manager 0.8.5 / Qemu / KVM

  - by Nico de Smidt

  Hi, requested use case is having a Windows XP SP3 guest running in 64bit Ubuntu. (Linux pcs 2.6.35-22-server #35-Ubuntu SMP Sat Oct 16 22:02:33 UTC 2010 x86_64 GNU/Linux) I want this guest to access an LVM LV on the Ubuntu disk. I've setup the following LVM config: --- Logical volume --- LV Name /dev/storage/sdc1 VG Name storage LV UUID Zg5IMC-OlqB-prL5-fgg4-3A9A-OgKP-oZ0QkJ LV Write Access read/write LV Status available # open 0 LV Size 1.01 GiB Current LE 259 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 251:3 -- 1) I've setup a storage pool for /dev/storage 2) I've mkfs.vfat /dev/storage/sdc1 3) and made a virtual IDE disk in the virt-manager setup for the guest. Target device: IDE Disk 2 Source path: /dev/storage/sdc1 -- Now when running XP (guest) Windows sees a new disk in Disk Manager and want's to install a partition on it, since it believes the drive is empty. After formatting from within Windows I can put data on the new disk volume. -- Back in Ubuntu however I cannot access this this any more since it created a partition within an LVM Logical Volume. Running fdisk -l shows the following: root@pcs:/media# fdisk -l /dev/storage/sdc1 Disk /dev/storage/sdc1: 1086 MB, 1086324736 bytes 32 heads, 63 sectors/track, 1052 cylinders Units = cylinders of 2016 * 512 = 1032192 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x8d72e4f4 Device Boot Start End Blocks Id System /dev/storage/sdc1p1 1 1050 1058368+ c W95 FAT32 (LBA) -- which seems fine to me, but when trying to mount /dev/storage/sdc1p1 I get the following error: mount /dev/storage/sdc1p1 /media/xp mount: special device /dev/storage/sdc1p1 does not exist which makes sense since in lvdisplay sdc1p1 does not exist Main question: I want to mount the vfat partition in both Ubuntu and XP What am I missing here????? regards, and thanks for your consideration. Nico

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• HTML5 Development for Dummies

  - by Geertjan

  What's HTML5 all about and what does it actually mean, concretely, to develop HTML5 applications? NetBeans IDE 7.3 provides something called "Project Easel", which is a bundling of HTML5-related tools into a coherent toolset. Within a matter of hours, you'll know everything you need to know about what all this is about if you follow the steps below.  Get A Solid Overview. Start by viewing this screencast from JavaOne 2012 (click the media link on the right side once you've clicked the link below, a downloadable MP4 file is also available there):https://oracleus.activeevents.com/connect/sessionDetail.ww?SESSION_ID=4038That is an awesome way to get you in the right mindframe for what HTML5 is and how it fits into the programming world, together with a very cool and entertaining demo, presented by JB Brock. He starts with about three slides and then does a super awesome demo that puts you into the picture very quickly. Understand How HTML5 Relates To Java EE. Now here's a very cool follow up to the above, again demo-driven (click the media links on the right side once you've clicked the link below):https://oracleus.activeevents.com/connect/sessionDetail.ww?SESSION_ID=4737David Konecny takes the Affable Bean project created via the NetBeans E-commerce Tutorial and creates an HTML5 front end for it! I.e., you are shown how HTML5 can provide a different front end, as an alternative to JSF. Why would you do that? Well, that's explained in David's session, as well as in JB Brock's session, i.e., choose the right technology for the right situation. Sometimes HTML5 might make sense, other times JSF might make sense. Follow The NetBeans Screencasts. To revise and firm up everything you've learned from the above two JavaOne sessions, watch two screencasts by Ken Ganfield, part 1, Getting Started with HTML5 and part 2, Working with JavaScript in HTML5 Applications. In particular, you'll learn how NetBeans IDE provides tools to thoroughly cover the needs of HTML5 developers. Having taken the above three steps, you now have a thorough background, together with an understanding of the tools and procedures needed for creating your own HTML5 applications.

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• XNA - Error while rendering a texture to a 2D render target via SpriteBatch

  - by Jared B

  I've got this simple code that uses SpriteBatch to draw a texture onto a RenderTarget2D: private void drawScene(GameTime g) { GraphicsDevice.Clear(skyColor); GraphicsDevice.SetRenderTarget(targetScene); drawSunAndMoon(); effect.Fog = true; GraphicsDevice.SetVertexBuffer(line); effect.MainEffect.CurrentTechnique.Passes[0].Apply(); GraphicsDevice.DrawPrimitives(PrimitiveType.TriangleStrip, 0, 2); GraphicsDevice.SetRenderTarget(null); SceneTexture = targetScene; } private void drawPostProcessing(GameTime g) { effect.SceneTexture = SceneTexture; GraphicsDevice.SetRenderTarget(targetBloom); spriteBatch.Begin(SpriteSortMode.Immediate, BlendState.Opaque, null, null, null); { if (Bloom) effect.BlurEffect.CurrentTechnique.Passes[0].Apply(); spriteBatch.Draw( targetScene, new Rectangle(0, 0, Window.ClientBounds.Width, Window.ClientBounds.Height), Color.White); } spriteBatch.End(); BloomTexture = targetBloom; GraphicsDevice.SetRenderTarget(null); } Both methods are called from my Draw(GameTime gameTime) function. First drawScene is called, then drawPostProcessing is called. The thing is, when I run this code I get an error on the spriteBatch.Draw call: The render target must not be set on the device when it is used as a texture. I already found the solution, which is to draw the actual render target (targetScene) to the texture so it doesn't create a reference to the loaded render target. However, to my knowledge, the only way of doing this is to write: GraphicsDevice.SetRenderTarget(outputTarget) SpriteBatch.Draw(inputTarget, ...) GraphicsDevice.SetRenderTarget(null) Which encounters the same exact problem I'm having right now. So, the question I'm asking is: how would I render inputTarget to outputTarget without reference issues?

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• .htaccess URL rewriting friendly URL with 2 parameters, the second parameter is optional

  - by letsworktogether

  I'm kind of stuck at this part and was hoping that I'd get some assistance. I'm building a highscores page in PHP, that's going great, it works. However, I dislike the idea of index.php?skill=name and therefore wanted a bit of SEO in this. I have successfully replaced the url with a more friendly version: highscores/skill/name And this is where the problem starts, I have added pagination to the highscores and the page is read from the HTTP_GET page variable ($_GET['page']). I dislike the idea of highscores/skill/name&page=2 and was hoping if you guys could assist me to make the url like the following: Page 1, so accessing the file without declaring the page number: DOMAIN.TLD/highscores/skill/name Page 1 so now the page variable is needed: DOMAIN.TLD/highscores/skill/name/2 As you can tell the "2" will define page 2 and load the correct data for page 2. However, I'm having much trouble in my .htaccess file to configure it this way. RewriteRule ^highscores\/skill\/(.*?)(\/(.*?)*)$ highscores/skills.php?skill=$1&page=$2 [L] # Skills page That is my latest attempt in order to get it to work, unfortunately it does not work, it makes the page look horrible (CSS doesn't work) and it doesn't go to the page specified on the URL.

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• How can we plan projects realistically while accounting for support issues?

  - by Thomas Clayson

  We're having a problem at work: we're trying to schedule work so that we can assess time scales and get deadline dates. The problem is that it's difficult to plan for a project without knowing everything that's going to happen. For instance, right now we've planned all our projects through the start of December, however in that time we will have various in house and external meetings, teleconferences and extra work. It's all well and good to say that a project will take three weeks, but if there is a week's worth of interruption in that time then the date of completion will be pushed back a week. The problem is 3 fold: When we schedule projects the time scales are taken literally. If we estimate three weeks, the deadline is set for three week's time, the client is told, and there is no room for extension. Interim work and such means that we lose productive time working on the project. Sometimes clients don't have the time that we need to take to do the work, so they'll sometimes come to us and say they need a project done by the end of the month even when we think that the work will take two months - not to mention we already have work to be doing. We have a Gantt chart which we are trying to fill in with all the projects we have and we fill in timesheets, but they're not compared to the Gantt chart at all. This makes it difficult to say "Well, we scheduled 3 weeks for this project, but we've lost a week here so the deadline has to move back a week." It's also not professional to keep missing deadlines we've communicated to the client. How do other people deal with this type of situation? How do you manage the planning of projects? How much "extra" time do you schedule into a project to account for non-project work that occurs during a project? How do you deal with support issues and bugs and stuff? Things you can't account for during planning? UPDATE Lots of good answers thank you.

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• Password-free logins using your email address only?

  - by Mario

  The state of logins is horrendous. With each site having it's own rules for passwords, it can be very hard to remember what variation you used on any given site. Logins are pure pain. One thing I love about Craigslist is that it did away with logins altogether. I know this design may not suit every site, but there's something to their design that beckons to be repeated. OpenID is great on sites that have adopted it, but it's still not standard. Would it be feasible/wise to use an email address as a login and provide no password? The site would send a short-term key directly to your email address. You click on the link and you're in. When you're done, you "logout" and your key is terminated. I've toyed with this idea before. What concerns (i.e. spammers, bots, etc.) would make this impractical or unsafe and could they be overcome?

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• Java web app, with plugin framework and ability to connect to source for updates

  - by lessthancommon

  I've searched all around for some good sources, but either have been searching for the wrong keywords, or I'm just missing something. I'm looking to redevelop a web app I've been using for some time now. Many parts are out of date, and we're constantly throwing in little hacks to attempt to give it new life. So what I'd like to do is re-engineer it from the ground up, built on some sort of plug-in framework. Before I continue, I'm more or less an intermediate Java programmer. In some ways, I'm hoping to use this project as a big learning experience. I've read a lot about OSGi, and it seems that's the most complete framework. Ideally, I would like an end result web app which I can run one instance as my hosting environment, and other instances can connect to it to grab new and updated plug-ins. Eventually I'll want to lock down these plug-ins based on some undecided criteria of who can get them (basically some will simply be updates, others will provide new functionality and should be "purchased" through an external system). But that will probably be handled in a later phase. There should be an administration view for managing bundles in a hot environment (looking to avoid having to restart the server for an update). I know all these things are possible, I'm just trying to find some good resources for reference. All the OSGi tutorials I'm finding seem to be too simplistic. If anyone here can guide me in the right direction on any or all of the items I'm looking for, it would be much appreciated. Also, this is my first post, so I'll take any comments/criticisms about the content of my post. Thanks!

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• Optimizing lifestyle and training

  - by Gabe

  I am a college freshman who has recently discovered a passion for computer science. Having had my first lick of formal python training last semester, I have cast aside my previously hedonist way of life and tunneled my sights on becoming the most rounded and proficient programmer I can be. I know that I'm taking strides in the right direction (I've stopped smoking, I've been exercising every day, I've taught myself C++ and OpenGL, and I've begun training in kung-fu and meditation), yet I am still finding myself struggling to achieve satisfactory results. I would like to be able to spend a good 3-4 hours every day burning through textbooks. I have the time cleared and the resources allocated. The problem lies in the logistics-- I have never taken anything seriously before. Recently I've realized that I am clueless when it comes to taking care of myself and gaining control of my mind, and it drastically hinders my productivity. My question is this: How can I learn to manage my time and take care of myself such that I can spend the maximum amount of time every day studying with steady concentration? Personal tricks would be key here: techniques you use to get yourself to sleep, a diet that yields focus, even computer break stretching routines or active reading techniques. Anything you could think of here would be great. I was a low-life in high school and I have the drive to turn my life around, I'm just quite a bit behind in the way of good habits :)

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• Spring Roo Database Reverse Engineer with Oracle

  - by kerry

  So you are trying to reverse engineer an Oracle database with roo? Unfortunately, due to licensing restrictions with the Oracle JDBC Drivers, this is a little difficult. There are a few blog posts and forum threads that address the problem but I figured I would post what worked for me here. First, you need to download the appropriate Oracle Drivers from Oracle. The required login, stringent password requirements, nosy registration form, and general system instability made this a pretty painful step for me. I’d also like to say that companies that have password requirements that don’t allow symbols (or any other non-standard requirement) have a special place in my heart. Having to recover my password every time I go to your site virtually guarantees I will only go there when I absolutely have to (not often). Anyways, once you have it downloaded you need to install is with maven: mvn install:install-file -Dfile=~/Downloads/ojdbc6.jar -DgroupId=com.oracle -DartifactId=ojdbc6 -Dversion=11.2.0.3 -Dpackaging=jar -DgeneratePom=true Here comes the fun part. You need to create an osgi wrapper for the driver to install it in roo. Otherwise, roo cannot see the driver. Create a new folder and put the contents of the oracle roo addon pom gist I created. Now build it with maven. You may want to change some of the artifact ids and dependencies for your particular situation. mvn package No open a roo shell and execute the following command: osgi install --url file:///Users/me/my-osgi-project/target/the-jar-it-built.jar Now run (in roo): jpa setup --provider HIBERNATE --database ORACLE dependency remove --groupId com.oracle --artifactId ojdbc14 --version 10.2.0.2 dependency add --groupId com.oracle --artifactId ojdbc6 --version 11.2.0.3 database properties set --key database.driverClassName --value oracle.jdbc.OracleDriver database properties set --key database.url --value jdbc:oracle:thin:@%YOUR_CONNECTION_INFO% database properties set --key database.username --value %YOUR_USERNAME% database properties set --key database.password --value %YOUR_PASSWORD% database reverse engineer --schema %YOUR_SCHEMA% --package ~.domain If you have any package loading exceptions when running the reverse engineer command you can uninstall the osgi bundle, set the package to optional in the osgi pom in the IncludedPackages tag (javax.some.package.*;resolution:=optional) rebuild, then reinstall in roo.

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• Ask The Readers: How Do You Camouflage Your Tech?

  - by Jason Fitzpatrick

  We love having a technology-packed house as much as the next geek, but not all our gizmos, gadgets, and peripherals are exactly Home and Garden approved. How do you enjoy all your tech without your living room and office looking like an electronics store? Image courtesy of Weekly Geek’s DIY charging station tutorial. Whether it’s to hide the insanely intense LEDS, minimize the visual clutter, or to boost the wife/husband acceptance factor of your geeky hobbies higher, there’s a variety of reasons for wrangling cables, hiding routers, or otherwise camouflaging your gear. This week we want to hear all about your tips for hiding or otherwise minimizing the appearance of gear around your home, office, and other personal spaces. Sound off in the comments with your best tips, trick, and camouflaging techniques; check back in on Friday for the What You Said roundup. HTG Explains: How Windows 8′s Secure Boot Feature Works & What It Means for Linux Hack Your Kindle for Easy Font Customization HTG Explains: What Is RSS and How Can I Benefit From Using It?

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• different data with same title and keywords

  - by Junaid Saeed

  here is my scenario i have a website where i redirect my users basing upon the device they were using, lets say a user is visiting from an iPad, i take him directly to the page of iPad wallpapers, the user selects iPad version & i take the user to the gallery of wallpapers where the user can select & download any wallpaper. Every wallpaper is the required resolution, i have my reasons for doing this, now the thing is there are diff. resolution. versions of an image appearing one 5 diff. sections of my website, each having their own view page Now there is only one record in db.table for the image, and basing on the my consistent naming convention of the images, i pick the required image. this means when 5 different pages are generated in 5 categorized sections of the website, due to a shared DB record, the keywords, the titles and every single detail of the 5 pages is same besides the resolution of the image, and the section specific details that the page has and yeah the pages also have different paths like wallpapers.com\ipad-1\cars\Ferrari-dino.html wallpapers.com\ipad-2\cars\Ferrari-dino.html wallpapers.com\ipad-3\cars\Ferrari-dino.html wallpapers.com\ipad-4\cars\Ferrari-dino.html wallpapers.com\ipad-5\cars\Ferrari-dino.html now this is my scenario, How do Search Engines see it and how do they rank it? Is it a Good or Normal or Bad SEO practice? If bad how dangerous it is for my sites SEO? i need your comments on my scenario.

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• Entity component system -> handling components that depend on one another

  - by jtedit

  I really like the idea of an entity component system and feel it has great flexibility, but have a question. How should dependent components be handled? I'm not talking about how components should communicate with other components they depend on, I have that sorted, but rather how to ensure components are present. For example, an entity cannot have a "velocity" component if it doesn't have a "position" component, in the same way it cant have an "acceleration" component if it doesn't have a "velocity" component. My first idea was every component class overrides an "onAddedToEntity(Entity ent)" function. Then in that function it checks that prerequisite components are also added to the entity, eg: struct EntCompVelocity() : public EntityComponent{ //member variables here void onAddedToEntity(Entity ent){ if(!ent.hasComponent(EntCompPosition::Id)){ ent.addComponent(new EntCompPosition()); } } } This has the nice property that if the acceleration component adds the velocity component, the velocity component will itself add the position component to the entity so dependency "trees" will sort themselves out. However my concern is if I do this components will silently be added with default values and, in the example of adding position, many entities will appear at the origin. Another idea was to simple have the "Entity.addComponent();" function return false if the component's prerequisite components aren't already on the entity, this would force you to manually add the position component and set its value before adding the velocity component. Finally I could simply not ensure a components prerequisite components are added, the "UpdatePosition" system only deals with entities with both a position and velocity component, so therefore adding a velocity component without having a position component wont be a problem (it wont cause crashes due to null pointer/etc), but it does mean entities will carry useless unused data if you add components but not their prerequisite components. Does anyone have experience with this problem and/or any of these methods to solve it? How did you solve the problem?

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• App_offline.htm and SharePoint and wholly contained images&hellip;

  - by Shawn Cicoria

  The question came up today if we could use an “app_offline.htm” file along with HTML in that file that would reference images. First, I wasn’t 100% sure if the app_offline.htm would work, but it sure did.  Since it’s just the Asp.net hosting process that detects the file, it circumvents loading any HttpApplications (SharePoint) beyond just serving up the HTML content. The second question was about having something more than text, specifically <img> tags.  So, since the HttpHandlers are taking all requests for all resources through the Asp.net pipeline, as soon as the app_offline.htm file is there, nothing else will get served from within that web application.    Sure, we could host the file (images) outside the web app, but what fun would that be? So, I found this link on using an image in app_offline.htm http://pbodev.wordpress.com/2009/12/20/app_offline-htm-with-an-image-yes-we-can/ Turns out, the src tag (in fact many tags) can take a stream of data represented by a mime type and base64 encoding inline – such as: <img style="height:515px;width:700px;border-width:0px;" src="data:image/jpeg;base64,/9j/4AAQSkZJRgA   One of the problems we had was the image was too large; so, sliced up the image, but ended up with spaces between each of the slices.  Low and behold, it works with CSS as well.   <style type="text/css"> .Slice_1_jpg { position: absolute; left:0px; top:0px; width:1011px; height:148px; background: url("data:image/jpeg;base64,/9j/4AAQSkZ   And the body is as follows: <body> <div class="Slice_1_jpg"> </div>   For this, I wrote a little Asp.Net site that, using a file upload control, will generate the necessary contents of what needs to go in the “data” value for the stream.  A link to the code is here: http://cicoria.com/downloads/CreateBase64OfImage.zip

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• Intelligence as a vector quantity

  - by Senthil Kumaran

  I am reading this wonderful book called "Coders at Work: Reflections on the Craft of Programming" by Peter Seibel and I am at part wherein the conversation is with Joshua Bloch and I found this answer which is an important point for a programmer. The paragraph, goes something like this. There's this problem, which is, programming is so much of an intellectual meritocracy and often these people are the smartest people in the organization; therefore they figure they should be allowed to make all the decisions. But merely the fact they are the smartest people in the organization does not mean that they should be making all the decisions, because intelligence is not a scalar quantity; it's a vector quantity. Here at the last sentence, I fail to get the insight which is he trying to share. Can someone explain it in a little further as what he means by a vector quantity, possibly trying to present the same insight. Further down, I get the point that he is not taking about having an organization where non-technical people (sometimes clueless) can be managers of the technical people for some reason that they can spend more time to write emails well, because the very next statement following the above paragraph was. And if you lack empathy or emotional intelligence, then you shouldn't be designing APIs or GUIs or languages. I understand that he is saying that in Software engineering, programmers should know how the users will see their product and design for them. I felt the above paragraph was very interesting.

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• How best to deal with the frustration that you encounter at the beginning of learning to code [closed]

  - by coderboy

  I am right now a newbie on the job learning to code in Cocoa . In the beginning I decided that I would try and understand everything I was doing . But right now I just feel like a clueless wizard chanting some spells . Its all just a matter of googling the right incantation . Frequently getting stuck and having to google for answers is proving to be a major demotivator for me . I know that this will get better over time but still I feel that somewhere , somehow I'm just approaching things the wrong way . I sit there stumped and then finally just look at sample code from Apple and I go Wow ! This is so logical and well structured ! . But just reading it is not going to get me to that level . So I would like to know , how do you guys approach learning something new . Do you read the whole documentation first , or do you read sample code or maybe its just about making lots of small programs first ?

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• How to convert rmvb to mp4? (or, why ffmpeg doesn't work?)

  - by Tom Brito

  Hi, I'm trying to use this script to convert an rmvb video to mp4, but I'm having problems with the ffmpeg. In apt-get there's only ffmpeg0 and ffmpeg-dev, I installed both, but the script doesn't work, it's saying that ffmpeg was not found. Any hint on this? --update The script I'm talking about: #!/bin/bash tipo=$1 arqv=$2 resolucao=$3 tipoarq=$4 help() { clear echo "Convertor de Vídeos para MP4" echo "Parametro 1 = Tipo: (A - Arquivo/D - Diretório)" echo "Parametro 2 = Arquivo/Caminho" echo "Parametro 3 = Resolução" echo "Parametro 4 = Tipo de Arquivos de Entrada (rmvb, avi, mpeg)" } if [ "$tipo" = "" -o "$arqv" = "" -o "$resolucao" = "" -o "$tipoarq" = "" ]; then help; exit fi if [ "$tipo" = "D" ]; then count=`ls "$arqv"/*.$tipoarq | wc -l` else count=1 fi echo "$count arquivos encontrados para converter." x=0 while [ ! $x -ge $count ]; do x=`echo $x + 1 | bc` if [ "$tipo" = "D" ]; then nome=`ls "$arqv"/*.$tipoarq | head -n $x | tail -n 1` else nome=$arqv fi echo "Convertendo $nome ..." ffmpeg -i "$nome" -acodec libfaac -ab 128kb -vcodec mpeg4 -b 1200kb -mbd 2 -cmp 2 -subcmp 2 -s $resolucao "`echo $nome | sed "s/\.$tipoarq//g"`".mp4 done exit --update Using WinFF it gives: Unknown encoder 'libx264' I've installed both the existing packages libx264-67 and libx264-dev, but none solved. Looking for more alternatives...

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• How to get Broadcom BCM 43XX Wireless card working

  - by Fer1805

  NOTE - Although this question is for a specific version of Ubuntu and a specific Broadcom model, the answer to it is for most Broadcom models and versions of Ubuntu 11.04, 11.10, 12.04 and 12.10. If you have come here from another question, feel free to read the answer instead. The answer covers many problems with several solutions. I'm having serious problems installing the Broadcom drivers for Ubuntu 11.04. It worked perfectly on my previous version, but now, it is impossible. I'm a user with no advance knowledge in Linux, so I would need clear explanations on make, compile, etc. I was following the instructions on the following blog, with no luck. How can I get Broadcom BCM4311 Wireless working? Can someone help me? Edit: For the command: "lspci | grep Network", I get the following message: 06:00.0 Network controller: Broadcom Corporation BCM4311 802.11b/g WLAN (rev 01) For the command: iwconfig, i get the following: lo no wireless extensions. eth0 no wireless extensions. When i follow the following steps (from the above link), there are a NO error message at all: open the 'Synaptic Package Manager' and search for bcm uninstall the bcm-kernel-source package make sure that the firmware-b43-installer and the b43-fwcutter packages are installed type into terminal: cat /etc/modprobe.d/* | egrep '8180|acx|at76|ath|b43|bcm|CX|eth|ipw|irmware|isl|lbtf|orinoco|ndiswrapper|NPE|p54|prism|rtl|rt2|rt3|rt6|rt7|witch|wl' (you may want to copy this) and see if the term blacklist bcm43xx is there if it is, type cd /etc/modprobe.d/ and then sudo gedit blacklist.conf put a # in front of the line: blacklist bcm43xx then save the file (I was getting error messages in the terminal about not being able to save, but it actually did save properly). reboot 'End of procedure' Before (not ubuntu 11.04), if i wanted to connect wireles, i just went to the icon at the upper side of the screen, click, showed ALL the wireless network available, and done. Now, the only options i see are: Wired Network Auto Eth0 Disconnect VPN Enable networking Connection information Edit connection. hope above info is enough for your help.

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• Magic Quadrant for x86 Server Virtualization Infrastructure

  - by Cinzia Mascanzoni

  Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} Gartner just published a report showing Oracle having moved into the challengers quadrant. Click here for the report

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• Scientists Demonstrate First-Person Shooter Games Improve Vision

  - by Jason Fitzpatrick

  Need an excuse to log a few more hours playing Call of Duty or Medal of Honor? Scientists demonstrated improved vision in test subjects after daily doses of first-person shooter games. Scientists at McMaster University took subjects who, as the result of surgery correcting congenital cataracts, had less than 20/20 vision. Subjects played Medal of Honor for a total of 40 hours over the course of 4 weeks before having their vision retested. The results? The CBC reports: The participants found improvements in detail, perception of motion and in low contrast settings. In essence, players could now read about one to one-and-a-half more lines on an optometrist’s eye chart. “We were thrilled,” Lewis said. “It’s very exciting to open up a new world of hope for these people.” How to Get Pro Features in Windows Home Versions with Third Party Tools HTG Explains: Is ReadyBoost Worth Using? HTG Explains: What The Windows Event Viewer Is and How You Can Use It

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• EF4 CPT5 Code First Remove Cascading Deletes

  - by Dane Morgridge

  I have been using EF4 CTP5 with code first and I really like the new code.  One issue I was having however, was cascading deletes is on by default.  This may come as a surprise as using Entity Framework with anything but code first, this is not the case.  I ran into an exception with some one-to-many relationships I had: Introducing FOREIGN KEY constraint 'ProjectAuthorization_UserProfile' on table 'ProjectAuthorizations' may cause cycles or multiple cascade paths. Specify ON DELETE NO ACTION or ON UPDATE NO ACTION, or modify other FOREIGN KEY constraints. Could not create constraint. See previous errors. To get around this, you can use the fluent API and put some code in the OnModelCreating: 1: protected override void OnModelCreating(System.Data.Entity.ModelConfiguration.ModelBuilder modelBuilder) 2: { 3: modelBuilder.Entity<UserProfile>() 4: .HasMany(u => u.ProjectAuthorizations) 5: .WithRequired(a => a.UserProfile) 6: .WillCascadeOnDelete(false); 7: } This will work to remove the cascading delete, but I have to use the fluent API and it has to be done for every one-to-many relationship that causes the problem. I am personally not a fan of cascading deletes in general (for several reasons) and I’m not a huge fan of fluent APIs.  However, there is a way to do this without using the fluent API.  You can in the OnModelCreating, remove the convention that creates the cascading deletes altogether. 1: protected override void OnModelCreating(System.Data.Entity.ModelConfiguration.ModelBuilder modelBuilder) 2: { 3: modelBuilder.Conventions.Remove<OneToManyCascadeDeleteConvention>(); 4: } Thanks to Jeff Derstadt from Microsoft for the info on removing the convention all together.  There is a way to build a custom attribute to remove it on a case by case basis and I’ll have a post on how to do this in the near future.

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