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How do I detect when someone shakes an iPhone?

...er, you want to set this view to become first responder: - (void) viewWillAppear:(BOOL)animated { [shakeView becomeFirstResponder]; [super viewWillAppear:animated]; } - (void) viewWillDisappear:(BOOL)animated { [shakeView resignFirstResponder]; [super viewWillDisappear:animated]; } ...
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Unable to generate an explicit migration in entity framework

... It tells you that there is some unprocessed migration in your application and it requires running Update-Database before you can add another migration. share | improve this answer ...
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registerForRemoteNotificationTypes: is not supported in iOS 8.0 and later

...ompiling as follows: #if __IPHONE_OS_VERSION_MAX_ALLOWED >= 80000 if ([application respondsToSelector:@selector(registerUserNotificationSettings:)]) { // use registerUserNotificationSettings } else { // use registerForRemoteNotificationTypes: } #else // use registerForRemoteNotificationT...
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Could not locate Gemfile

I'm certainly no Ruby developer but I have an application on my server using Ruby, Gems, and Bundler. I am trying to install another Ruby on under a different user account but on the same VPS. When I go to run ...
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Reading ePub format

I am trying to develop an iPhone application to read ePub files. Is there any framework available to develop this? I have no idea about how to read this file format. I tried to parse a sample file with .epub extension using NSXML Parser, but that fails. ...
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What are the Dangers of Method Swizzling in Objective-C?

...void)load. The load class method is executed serially at the start of your application. You won't have any issues with concurrency if you do your swizzling here. If you were to swizzle in +(void)initialize, however, you could end up with a race condition in your swizzling implementation and the runt...
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AngularJS access parent scope from child controller

...{ $scope.parentCities = $scope.cities; } The AngularJS docs use this approach, here you can read more about the $scope. Another update I think this is a better answer to the original poster. HTML <div ng-app ng-controller="ParentCtrl as pc"> <div ng-controller="ChildCtrl as c...
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Why doesn't django's model.save() call full_clean()?

... I see two problems with this approach 1) in case of ModelForm's full_clean() would be called twice: by the form and by the signal 2) If the form excludes some fields, they would still be validated by the signal. – mehmet ...
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What is the difference between a .xib file and a .storyboard?

... Apple introduced the concept of "storyboarding" in iOS5 SDK to simplify and better manage screens in your app. You can still use the .xib way of development. Pre-storyboard, each UIViewController had an associated .xib with...
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How to run .APK file on emulator [duplicate]

... Steps (These apply for Linux. For other OS, visit here) - Copy the apk file to platform-tools in android-sdk linux folder. Open Terminal and navigate to platform-tools folder in android-sdk. Then Execute this command - ./adb instal...