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• Does learning to develop for iOS create a lock-in?

  - by Jungle Hunter

  If I begin my career (first job) with developing on the iOS platform, does that lock me in into iOS and Mac OS X development only? By locking me in I mean will that create barriers for me to switch technologies as I would be mainly working with Objective-C. If yes, does that make my career choices limited? I'm interested in comparing this with Android development, which if pursued will leave me with Java skills (correct me if I'm wrong) which I can use elsewhere.

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• how to create a bootable usb on mac to install ubuntu into a formatted PC?

  - by kutayk

  hi I have a working MacBook Pro and a crashed Windows 7 PC. I was running Ubuntu on my PC but after a recurrent issue now I can't boot either OS. I would like to install only ubuntu to my PC and will make Windows 7 history for good. But I am a bit puzzled with cretatinf bootable usb options on the website. If I create a bootable USB on my MAc following the instructions for MAc OS, would it boot in A PC?

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• Where do I create the file .htaccess, in order to serve my HTML5 cache manifest file correctly?

  - by Forrest

  From a post on http://diveintohtml5.org/offline.html (Wayback Machine Copy) Your cache manifest file can be located anywhere on your web server, but it must be served with the content type text/cache-manifest. If you are running an Apache-based web server, you can probably just put an AddType directive in the .htaccess file at the root of your web directory: AddType text/cache-manifest .manifest Where do I create the file .htaccess? Need some more setup with apachectl ? Thanks very much !

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• How does this snippet of code create a ray direction vector?

  - by Isaac Waller

  In the Minecraft source code, this code is used to create a direction vector for a ray from pitch and yaw:' float f1 = MathHelper.cos(-rotationYaw * 0.01745329F - 3.141593F); float f3 = MathHelper.sin(-rotationYaw * 0.01745329F - 3.141593F); float f5 = -MathHelper.cos(-rotationPitch * 0.01745329F); float f7 = MathHelper.sin(-rotationPitch * 0.01745329F); return Vec3D.createVector(f3 * f5, f7, f1 * f5); I was wondering how it worked, and what is the constant 0.01745329F?

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• How do I create a bounding frustrum from a view & projection matrix?

  - by Narf the Mouse

  Given a left-handed Projection matrix, a left-handed View matrix, a ViewProj matrix of View * Projection - How do I create a bounding Frustum comprised of near, far, left, right and top, bottom planes? The only example I could find on Google (Tutorial 16: Frustum Culling) seems to not work; for example, if the math is used as given, the near-plane's distance is a negative. This places the near-plane behind the camera...

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• SDL 2.0: is there a library to create 2D particle effects rapidly?

  - by mm24

  I would like to create an light/explosion particle effect using some in built library. I am used to Cocos2D where there are specific classes that you can simply initialize in a certain position and producing a certain particle effect. Is there a way to do so in SDL 2.0 C++? I have found this tutorial but it seems to go for a "build it yoursefl" solution, which is ok but I do not want to re-invent the wheel if someone else has already built it.

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• What technologies and tools would I need to create an advanced 3D game on Unreal Engine 3?

  - by BleakCabalist

  This is a purely hypothetical question. Let's say I already have the UE3 license and would like to create an advanced single-player FPS. What other tools/technologies would I need? For example for audio, animations, modeling and so on. I mean all of them. I've been looking for some time now and can't find any source, which would say what's needed from beggining to the end of game development cycle.

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• How do I create a Unicode databases in PostgreSQL 8.4?

  - by wildpeaks

  I installed the postgresql-8.4 package with default options. Everything worked fine, however I can't seem to manage to create unicode databases: -- This doesn't work createdb test1 --encoding UNICODE -- This works createdb test2 The error message, createdb: database creation failed: ERROR: new encoding (UTF8) is incompatible with the encoding of the template database (SQL_ASCII) is a bit puzzling because (afaik) I don't use a template for creating the new db, or is it implicitely referring to the default "postgres" database for some reason ? Or maybe I'm missing a setting in a .conf file ?

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• How to create a JMS durable subscriber in WebLogic Server?

  - by lmestre

  WebLogic Server Provides a set of examples that are very helpful to get started with Weblogic ServerHere you can check how to install the examples:http://docs.oracle.com/cd/E23943_01/doc.1111/e14142/prepare.htmAfter you have installed the examples, you can find the example you want to review, in this case TopicReceive, here:wlserver_10.3/samples/server/examples/src/examples/jms/topicTo review details of the specific example, you can open:wlserver_10.3/samples/server/examples/src/examples/jms/topic/instructions.htmlTo create a Durable Subscriber, you can just set the client ID  and invoke createDurableSubscriber instead of calling createSubscriber, i.e.:    tconFactory = (TopicConnectionFactory)       PortableRemoteObject.narrow(ctx.lookup(JMS_FACTORY),                                   TopicConnectionFactory.class);    tcon = tconFactory.createTopicConnection();    //Set Client ID for this Durable Subscriber    tcon.setClientID("GT2");    tsession = tcon.createTopicSession(false, Session.AUTO_ACKNOWLEDGE);    topic = (Topic)       PortableRemoteObject.narrow(ctx.lookup(topicName),                                   Topic.class);    // Create Durable Subscription    tsubscriber = tsession.createDurableSubscriber(topic, "Test");    tsubscriber.setMessageListener(this);    tcon.start(); Enjoy!   You can read more about this here:http://docs.oracle.com/cd/E23943_01/web.1111/e13727/advpubsub.htm#CHDEBABChttp://docs.oracle.com/cd/E23943_01/web.1111/e13727/manage_apps.htm#i1097671    http://docs.oracle.com/cd/E23943_01/apirefs.1111/e13943/WebLogic.Messaging.ISession.CreateDurableSubscriber_overload_2.html

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• Should I create topics in a forum I'm about to launch so that new users won't feel it is "empty"?

  - by janoChen

  I'm about to launch a discussion forum about Taiwan. I'm really trying to figure out how to deal with the first visitors. I've thought about the following so far: Invite few friends to start some discussions and give some replies. Create discussions myself and reply them myself (with another account). I don't want the first visitors to feel like the site is empty. Maybe I'm missing something. Any suggestions?

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• How do I create a background image on web page?

  - by kasha

  I am a new designer so hopefully this question isn't too basic! How do I create a background image on a webpage for a programmer? I designed the page in photoshop and I would like to know how to send the background image (the 25% opacity buildings overlay). I would be happy to send the main image (but it is too large and I imagine would slow the site and loading time drastically). here is the link to the design... http://problemio.com/home_page_1_1.pdf

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• ASP.NET 4.0 and the Entity Framework 4 - Part 1 - Create a Database using Model-First Development

  This is the first in a series of articles that will develop an ASP.NET application that uses the Entity Framework 4. This article will demonstrate how to use Visual Studio 2010 and the Entity Framework 4 to create a database in a step-by-step approach. The database created in this article will then be used in future articles to demonstrate how to add, update, delete, and select records using the Entity Framework.

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• Is possible to create an intranet site in Ruby on Rails? [closed]

  - by Akromyk

  I'm just coming out of a .Net course and I'm wondering whether it is possible to create an intranet site using Ruby on Rails, and if so, would it even be a good idea. I plan on creating a web site for a vendor that hopes to open up a physical location and it would be beneficial for us to go with a technology that could tie their web front into their intranet for helping them manage orders and logins, but at the same time still have a low cost.

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• "Create My Own Website" - This is the Most Common Answer I Get When I Ask My Favourite Question

  "Create My Own Website" - This is the most common answer I get when I ask people what one internet skill they would most like to have. Imagine if you could go from new business idea to having a webpage up online in just an hour or so. Well the great news is that you can - and you can do it for Free.

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• Windows "known folders": is there any one of them which is reliably read/write for all users on all

  - by Stabledog

  SHGetKnownFolderPath() and its cohorts accept one of the constants defined here (http://msdn.microsoft.com/en-us/library/dd378457%28v=VS.85%29.aspx ), returning the path to a directory. I'm looking for one of these folders which is reliably writable by all users (including LocalSystem) on XP, Vista, and Windows 7... but I think I'm striking out. It appears that, in fact, there is no single location on the hard drive anymore where you can put a file and be assured that all users can write to it on all these OS versions, without fiddling the permissions first. Is this true?

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• Intellij Idea 9, what folders to check into (or not check into) source control?

  - by Benju

  Our team has just moved from Netbeans to Intellij 9 Ultimate and need to know what files/folders should typically be excluded from source control as they are not "workstation portable" ie: they reference paths that only exist on one user's computer. As far as I can tell Intellij wants to ignore most of the .idea project including .idea/artifacts/* .idea/inspectionProfiles/* .idea/copyright/* .idea/dataSources.ids .idea/dataSources.xml .idea/workspace.xml However it seems to want to check in the .iml files that exist in each module's root directory. I originally checked in the entire .idea directory via the command line which is obviously not aware of what "should" be ignored by Idea. Is the entire .idea directory typically ignored?

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• Why does Git display certain new folders when checking out old revisions?

  - by ConnorG

  Hey all - I'm still learning the ropes of Git (love it!) but the other day I noticed some behavior I just do not understand. We have, in essence, three folders that got moved into the repository at different times (one immediately after we created the repo, one a little while later, and one just recently). Recently, I had to get some code out of an old revision. I used git checkout <old SHA1 hash> to pull up one of our first checkins, when I noticed Git showed the old folder (as it should), as well as the newest folder (which got added to the repo long after the checked out commit was made). But it did not show the second folder. What would cause Git to display the newest folder with the old revision?

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• Subversion: What to do with branches, tags and trunk folders?

  - by bartclaeys

  A little background first: I'm a designer/developer and decided to use subversion for a personal project. I'm the only one working on this project. I've setup a Beanstalk account and installed Versions on Mac. Locally I have MySQL and PHP running through MAMP. First thing I did in Versions is click the 'checkout' button. I selected my webroot folder and a folder has been created with three subfolders: branches, tags, trunk. I don't understand what to do with this. My code lives in the webroot and a bunch of subfolders and I can't move my code to any of the three folders without breaking things. So, my question is, how do I tell Versions that my code is in the webroot folder and not in the folder it created itself?

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• How to make a plugin for [Path] Finder to browse zip-archives as folders?

  - by Andrei

  What really surprises me is lack of some essential functionality in Finder, when one migrates from Windows to OS X. One of the things is a possibility to open an archive as a folder, i.e. staying in the directory tree and being able to drag and drop files from the archive to folders in the tree, sidebar etc. What would you do to enable such functionality? Update Path Finder is an awesome shareware app, which I am going to use instead of the standard Finder (as quite many Mac users do), so I am more interested in a plug-in for Path Finder to browse archives. There is a possibility to browse packages (check the View Options), so I believe it is possible to extend it to archives. There is also a SDK for making plugins for Path Finder. The only question - how to make the plugin, so all struggling people get finally happy?

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• How to treat compressed folders as files using ShellObject from WindowsAPICodePack?

  - by JustABill

  I am trying to implement a filesystem browser using the WindowsAPICodePack for C# (.Net 4), and it works pretty well, except that the ShellObject system treats zip files as folders, whereas I'd prefer they be files. Is there some way I can force it to work this way? The low-level interop it does is beyond me. As far as I can tell, internally it asks if the item is a Folder or a Filesystem element. It then uses this (and some type checks) to figure out what it actually is. Is it safe to force it to treat it as a file if it's Compressed? Or do I have to do something else?

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• Ignoring files and folders in an svn-controlled folder?

  - by user246114

  Hi, I'm using svn on a mac. I'm trying to add an eclipse project to a repo. I want to ignore all .class files, and a few subfolders. I tried the following: svn propset svn:ignore *.class . property 'svn:ignore' set on '.' svn propset svn:ignore eclipse/.metadata/ . property 'svn:ignore' set on '.' so I think it's working, but then I do: svn add toplevelfolder and it still adds all .class files and folders I tried to ignore above. What's the right way to do this? Thanks

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• How to create RPM for 32-bit arch from a 64-bit arch server?

  - by Gnanam

  Our production server is running CentOS5 64-bit arch. Because there are no RPM available currently for SQLite latest version (v3.7.3), I created RPM using rpmbuild the very first time by following the instructions given here. I was able to successfully create RPM for 64-bit (x86_64) architecture. But am not able to create RPM for 32-bit (i386) architecture. It failed with the following errors: ... ... ... + ./configure --build=x86_64-redhat-linux-gnu --host=x86_64-redhat-linux-gnu --target=i386-redhat-linux-gnu --program-prefix= --prefix=/usr --exec-prefix=/usr --bindir=/usr/bin --sbindir=/usr/sbin --sysconfdir=/etc --datadir=/usr/share --includedir=/usr/include --libdir=/usr/lib64 --libexecdir=/usr/libexec --localstatedir=/var --sharedstatedir=/usr/com --mandir=/usr/share/man --infodir=/usr/share/info --enable-threadsafe checking for a BSD-compatible install... /usr/bin/install -c checking whether build environment is sane... yes checking for gawk... gawk checking whether make sets $(MAKE)... yes checking for style of include used by make... GNU checking for x86_64-redhat-linux-gnu-gcc... no checking for gcc... gcc checking for C compiler default output file name... configure: error: C compiler cannot create executables See `config.log' for more details. error: Bad exit status from /var/tmp/rpm-tmp.73141 (%build) RPM build errors: Bad exit status from /var/tmp/rpm-tmp.73141 (%build) This is the command I called: rpmbuild --target i386 -ba sqlite.spec My question is, how do I create RPM for 32-bit arch from a 64-bit arch server?

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• Can many addon domains slow down cPanel or create problems?

  - by Marco Demaio

  I actually resell hosting plans by using one single cPanel account and many addon domains under it. Basically for each new user I don't create a new cP account, but I simply create a new ADDON domain and give him the necessary space. I know in this way the final user won't be able to manage his emails and he want be able to access all cPanel features, but that's ok. My only question is: "is there a limit on the number of cPanel addon domain that can be added?". I know in my account I'm allowed to add unlimited addon domains, but is there something that might happen that slows down cPanel or could create problems? I mean is there any suggestions you could give me about the way i'm using cPanel which might not be the usual way of using it. (As for instance: "be aware that Awstast could run very slow or crash", or "be aware that mails from different addon domains under the same cp account could create many problems.", etc.) Many thanks!

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• How to create array with unique sprites? in cocos2d iphone

  - by prakash s

  I write the code like this. This displays only one sprite (red colour bubble) with number of times and moving down, but actually I want to display different sprites (different colour bubble) every time and moving down. I also add no of .png images in resource folder of my project. Here I used only 3.png, but I need to display all *.png images (different colour bubbles) in my project but I don't know how to get this. Please help me Thank you. Here is the code: -(void)addTarget { CCSprite *target = [CCSprite spriteWithFile:@"3.png" rect:CGRectMake(0, 0, 256, 256)]; CGSize winSize = [[CCDirector sharedDirector] winSize]; int minY = target.contentSize.height/2; int maxY = winSize.height - target.contentSize.height/2; int rangeY = maxY - minY; int actualY = (arc4random() % rangeY) + minY; // Create the target slightly off-screen along the right edge, // and along a random position along the Y axis as calculated above target.position = ccp(winSize.width + (target.contentSize.width/2), actualY); [self addChild:target]; // Determine speed of the target int minDuration = 4.0; int maxDuration = 12.0; int rangeDuration = maxDuration - minDuration; int actualDuration = (arc4random() % rangeDuration) + minDuration; // Create the actions id actionMove = [CCMoveTo actionWithDuration:actualDuration position:ccp(-target.contentSize.width/2,actualY)]; id actionMoveDone = [CCCallFuncN actionWithTarget:self selector:@selector(spriteMoveFinished:)]; [target runAction:[CCSequence actions:actionMove, actionMoveDone, nil]]; // Add to targets array target.tag = 2; [_targets addObject:target]; } -(void)gameLogic:(ccTime)dt { [self addTarget]; } -(id) init { if( (self=[super initWithColor:ccc4(255,255,255,255)] )) { // Enable touch events self.isTouchEnabled = YES; // Initialize arrays _targets = [[NSMutableArray alloc] init]; _projectiles = [[NSMutableArray alloc] init]; // Get the dimensions of the window for calculation purposes CGSize winSize = [[CCDirector sharedDirector] winSize]; [self schedule:@selector(gameLogic:) interval:1.0]; [self schedule:@selector(update:)]; } return self; } - (void)update:(ccTime)dt { NSMutableArray *projectilesToDelete = [[NSMutableArray alloc] init]; for (CCSprite *projectile in _projectiles) { CGRect projectileRect = CGRectMake(projectile.position.x - (projectile.contentSize.width/2), projectile.position.y - (projectile.contentSize.height/2), projectile.contentSize.width, projectile.contentSize.height); NSMutableArray *targetsToDelete = [[NSMutableArray alloc] init]; for (CCSprite *target in _targets) { CGRect targetRect = CGRectMake(target.position.x - (target.contentSize.width/2), target.position.y - (target.contentSize.height/2), target.contentSize.width, target.contentSize.height); if (CGRectIntersectsRect(projectileRect, targetRect)) { [targetsToDelete addObject:target]; } } for (CCSprite *target in targetsToDelete) { [_targets removeObject:target]; [self removeChild:target cleanup:YES]; _projectilesDestroyed++; if (_projectilesDestroyed > 30) { //GameOverScene *gameOverScene = [GameOverScene node]; // [gameOverScene.layer.label setString:@"You Win!"]; // [[CCDirector sharedDirector] replaceScene:gameOverScene]; } } if (targetsToDelete.count > 0) { [projectilesToDelete addObject:projectile]; } [targetsToDelete release]; } for (CCSprite *projectile in projectilesToDelete) { [_projectiles removeObject:projectile]; [self removeChild:projectile cleanup:YES]; } [projectilesToDelete release]; }

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• Should I create separate Work and Personal Github accounts?

  - by Almost Surely

  I'm fairly new to programming, and I've been working on many personal projects, which I'm concerned can come across as silly/unprofessional. The kind of projects I have are a Reddit Image Downloader and a tool for GM's to use in roleplaying games. I want to start building up a Github for projects in my chosen field of Data Analytics, but I'm not sure how to orgaqnize projects on my Github account. Should I create a "Professional" Github, mainly containing different analytical scripts and have a separate "Personal" account for fun little projects of mine? Or am I just overthinking this and should I just maintain account?

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