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  • Is single float assignment an atomic operation on the iPhone?

    - by iter
    I assume that on a 32-bit device like the iPhone, assigning a short float is an atomic, thread-safe operation. I want to make sure it is. I have a C function that I want to call from an Objective-C thread, and I don't want to acquire a lock before calling it: void setFloatValue(float value) { globalFloat = value; }

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  • How to create sleek customized buttons, tables and other views for iPhone/iPad apps?

    - by wgpubs
    I'm looking to know both what can be customized as well as the recommended way to customize some of the major UIView subclasses in the iPhone SDK (in particular UIButton, UITableView/Cell ... but really open to any of the views in the SDK). Any recommended tutorials? Examples? Are there bad practices that can actually hinder performance and/or destablize your app in any way that should be avoided? Thanks

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  • Canadian English on Apple products

    - by thepurplepixel
    Apple is an American company. As many of you probably know, Canadian English is different from American English, and closer to British English (e.g. colour instead of color). I use iWork and Microsoft Office for Mac (along with many other applications on OS X), and OS X, nor my iPhone, have an option to switch to Canadian English. Yes, you can select Canadian English as an input language in the language bar, but any program that uses the central OS X spell checking (from Mail to Office to iWork to Chrome) will check words against an American English dictionary. I know asking a question that involves an iPhone component is borderline off-topic, but I know on my iPhone I can select British English, but that turns my $ into £ and has a few other weird spelling quirks. Simple question: Is it possible to make OS X (and maybe the iPhone) use a Canadian English dictionary for its spell checking? Because British English just doesn't cut it anymore. Thanks!

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  • Copying a massive databse for local ruby on rails development?

    - by tesmar
    Hi guys, There is a massive database (GB) that I am working with now and all of the previous development has been done on a slicehost slice. I am trying to get ready for more developers to come in and work so I need each person to be able to setup his own machine for development, which means potentially copying this database. Selecting only the first X rows in each table to cut size could be problematic for data consistency. Is there any way around this, or is a 1 hour download for each developer going to be necessary? And beyond that, what if I need to copy the production DB down for dev purposes in the future? Sincerely, Tyler

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  • Do I need to keep "recompiling" my iPhone app code everytime apple releases a new iOS version?

    - by user1760606
    New here guys but have got a genuine problem. I have an iPhone app that was developed using SDK4. With apple introducing the new iOS version 6, does my code need to be recompiled on the new SDK to make it compatible with version 6? Right now it crashes on iOS6. Also, do I need to do that everytime apple brings out a new version? I wonder every other app on earth already does that ?! Thanks, Raghav

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  • mixing OpenGL and Interface Builder/ UI Controls - bad idea? Why? (iPhone)

    - by Adam
    I've heard that OpenGL ES and standard iPhone UI controls don't play well together, but I'm wondering if anyone knows why, and what the effects are? I'm writing an OpenGL based game, and the view is loaded from a nib file with ui controls, and it seems to work ok, but the game is really simple at this point... does using ui controls cause some kind of performance hit?

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  • How to use NSNotificationCenter in delegate and respond to the notifation in my view in iphone?

    - by Warrior
    I am new to iphone development.I am parsing a url in my delegate class, i want to send a notification once the parsing is completed to my view "testviewcontroller".With reference to the notifation i want to perform some action in my view. I want to know ,how to set the notification in delegate with referring to the selector method in my "testviewcontroller" class.Please help me out.Thanks.

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  • Local sites not displaying in VirtualBox when using Django's local development server?

    - by littlejim84
    Hello. I develop web applications using Django on Mac OSX 10.6. I use Django's built in local development server which I run on my computer's IP (such as: http://192.168.0.11:8001/). I test my applications in Firefox, Safari and Chrome and all display fine. I use Sun's VirtualBox with 3 different instances of Windows XP that have IE6, IE7 and IE8 on them. For whatever reason, these sometimes just don't display the Django sites. They come up with 'The page cannot be displayed'. Eight times out of ten, they display fine and function normally but for no reason at all they won't display. Sometimes restarting Django's local development server from the Terminal will fix the problem, sometimes it won't. Is there some sort of VirtualBox settings or Django settings that I need to set to ensure smooth operation of this? Am I overlooking something? Has anyone else had these problems?

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  • iPhone app works hundreds of times, then crashes from memory error on startup, then never works unti

    - by peter
    I have a Cocos2d/openGL iPhone game. It's a universal app and I'm dealing with an occasional but nasty error on the iPad. We are loading a lot of textures up front (3 2048x2048 textures). I'm working on reducing this up front load, but what worries me is I really don't understand the root cause of this crash that permanently breaks the app. This is the deal: 1. App works fine for hundreds of plays on the iPad 2. Eventually (I'm guessing due to other programs using up some memory and not letting go or whatever) the app starts crashing on startup. It just closes again in the middle of loading. 3. The App will now never work again on that iPad, closing immediately every time, until the iPad is restarted. Obviously my app is demanding too much memory up front to work reliably every time, I get that. What I don't get is why when it fails once, it has failed forever until the iPad is restarted. Can anyone explain what is going on here? EDIT: forgot to add organizer crash lags just say low memory, like this every time (I changed my app name to MyAppName below). Again, I know it's low memory, but why does it stay low memory until restart?: Incident Identifier: E7A2507C-3FB1-4E3B-B315-09F094236541 CrashReporter Key: 0fda9d667f2c6073f20a76809aa25438b6854d15 OS Version: iPhone OS 3.2 (7B367) Date: 2010-04-30 16:59:44 -0400 Free pages: 437 Wired pages: 17228 Purgeable pages: 0 Largest process: MyAppName Processes Name UUID Count resident pages MyAppName <6307ce41802850944baa78d29224fa7f> 22385 (jettisoned) (active) mediaserverd <ea8bac28b06fe3980fdd44b5caceb563> 242 DTMobileIS <a0f651e43881e66f50f8a95abea72921> 5826 notification_pro <4c9a7ee0a5bbe160465991228f2d2f2e> 67 syslog_relay <4ceaed776d2df957fa130712f4ef21d0> 66 notification_pro <4c9a7ee0a5bbe160465991228f2d2f2e> 67 notification_pro <4c9a7ee0a5bbe160465991228f2d2f2e> 67 afcd <4f3c9566e33b4463f05603d990584e5d> 72 ptpd <83de0f774bd6553d513ae9e19b0f9b56> 181 syslogd <66247e305d5c0bf6f1ce1cc950653263> 81 lsd <a4d852c1c8da2b3d231bdc90887b52ba> 130 iapd <a8534cbde4b90ad5915dd26ab03ff3e3> 204 notifyd <5e9d5bee7c3eae1c8b494c79eb11406e> 71 BTServer <64e4a6ea6b1240db2331e05a29caa862> 108 CommCenter <97bf297944ac4bde19bcee96dd23bd5f> 181 SpringBoard <c7a5904c12db7b14334a4edaa4cabaa9> 5339 (active) configd <aca9fa3380322669164fd6b1a3864300> 373 fairplayd.K48 <2d997ffca1a568f9c5400ac32d8f0782> 84 locationd <dd1ea88105c62173908ce767db5c4d37> 599 mDNSResponder <820560222d47a1f2a0dce98a7f8a9721> 108 lockdownd <497fd54c79a680bf29f5d9320f514613> 303 MobileStorageMou <c277b79c2157c4dc5cfc5c3ca35bd5f2> 69 launchd <66972eee4d865c4383b33d985d22994b> 98 **End**

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  • iphone dylibs and frameworks are already in the device?

    - by Scott Pendleton
    Are dylibs and frameworks already in an iPhone, or does my app actually incorporate them? Also, in Xcode I see dylibs with identical names. Sometimes the subsequent names are incremented, as in libz.dylib, libz.1.dylib, libz.1.1.3.dylib, and libz.1.2.3.dylib. If I have to include libz, should I use the one with the highest rev number, assuming that that's what that is?

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