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git clean -f
If you want to also remove directories, run git clean -f -d.

If you just want to remove ignored files, run git clean -f -X.

If you want to remove ignored as well as non-ignored files, run git clean -f -x.

Note the case difference on the X for the two latter commands.

If clean.requireForce is set to "true" (the default) in your configuration, then unless you specify -f nothing will actually happen, with a recent enough version of git.

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if (floor(NSFoundationVersionNumber) <= NSFoundationVersionNumber_iOS_6_1) {
   // Load resources for iOS 6.1 or earlier
} else {
   // Load resources for iOS 7 or later
}

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@interface UINavigationController (autorotation)

-(BOOL)shouldAutorotate;
-(NSUInteger)supportedInterfaceOrientations;

@end

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@implementation UIStoryboard (MyApp)

+ (UIStoryboard *)mainStoryboard {
    return [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];
}

@end

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// Get the storyboard named secondStoryBoard from the main bundle:
UIStoryboard *secondStoryBoard = [UIStoryboard storyboardWithName:@"secondStoryBoard" bundle:nil];
// Load the initial view controller from the storyboard. // Set this by selecting 'Is Initial View Controller' on the appropriate view controller in the storyboard.
UIViewController *theInitialViewController = [secondStoryBoard instantiateInitialViewController];
// Then push the new view controller in the usual way:
[self.navigationController pushViewController:theTabBar animated:YES]; 

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/ - Quick Add
Hold Shift while resizing - Maintain aspect ration
Hold Command while moving object - Removes snapping
Shift + Direction while an object is selected - Moves object faster
Command + Alt + (Shift) + Direction while an object is selected - Resizes object
Command + Up/Down - Moves selected layer up or down 1 level
Command + (Shift) + Up/Down - Moves selected layer to top or bottom layer
Alt + Drag object - Duplicate object
Shift + click another object - Add object to current selection
Command + click another object - Add object to current selection

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//To fetch a branch, you simply need to:

git fetch origin

//This will fetch all of the remote branches for you. With the remote branches 
//in hand, you now need to check out the branch you are interested in, giving 
//you a local working copy:

git checkout -b test origin/test

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git add -u

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git config --global merge.conflictstyle diff3

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#import <Foundation/Foundation.h>

@interface MySingleton : NSObject

- (id)sharedInstance;

@end