drance’s gists

drance / gist:71e347d2e2e29a1d8706

Created November 10, 2015 03:54

Lazy devs are lazy

	alias gb="git branch"
	alias gcb="git co -b"
	alias gd="git difftool"
	alias gl="git log"
	alias gln="git log --name-only"
	alias gs="git status"
	alias gt="git tag -l"
	alias gsl="git stash list"
	alias gsms="git submodule sync"
	alias gsmu="gsms; git submodule update --init --recursive"

drance / AppleTVName

Created November 3, 2014 20:45

Get the currently-routed AppleTV's name.

	// Use in conjunction with e.g. KVO on AVPlayer.externalPlaybackActive
	AVAudioSessionPortDescription *port = [AVAudioSession sharedInstance].currentRoute.outputs.firstObject;
	if ([port.portType isEqualToString:AVAudioSessionPortAirPlay]) {
	NSLog(@"Now playing on '%@'", port.portName);
	}

drance / gist:d26278546acfaed54ba1

Created May 28, 2014 00:22

Run on the main thread. If we're already there, run synchronously.

	@implementation NSOperationQueue (BHSAdditions)

	+ (void)bhs_runOnMainQueue:(void (^)(void))block {
	NSParameterAssert(block);
	if ([NSThread isMainThread]) {
	block();
	} else {
	[[self mainQueue] addOperationWithBlock:block];
	}
	}

drance / gist:9613950

Last active August 29, 2015 13:57

Got tired of semaphore/runloop boilerplate for async unit tests

	- (void)sleepRunLoopForInterval:(NSTimeInterval)interval whileRunningAsynchronousTest:(void (^)(dispatch_semaphore_t semaphore))test {
	dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);

	NSAssert((test != NULL), @"Passed a NULL test block");
	test(semaphore);

	while(dispatch_semaphore_wait(semaphore, DISPATCH_TIME_NOW)) {
	[[NSRunLoop currentRunLoop] runMode:NSDefaultRunLoopMode beforeDate:[NSDate dateWithTimeIntervalSinceNow:interval]];
	}
	}

drance / gist:6317041

Created August 23, 2013 08:55

This NSOperationQueue category method lets you use a "cancelable" block with NSOperation. By passing the containing operation to the block, the block can return early or respond in other ways if the operation's state changes. The vanilla -addOperationWithBlock: has no reference to the operation, so it's impossible to know, let alone leverage, it…

	// Passes the new operation to block so it can check for cancellation and exit early
	- (NSOperation )bhs_addOperationWithCancelableBlock:(void (^)(NSOperation ))block {
	NSBlockOperation *op = [[NSBlockOperation alloc] init];
	__weak NSBlockOperation *weakOp = op;
	[op addExecutionBlock:^{
	block(weakOp);
	}];
	[self addOperation:op];
	return op;
	}

drance / UIViewController+BHSContainment.m

Last active September 2, 2021 00:26

Tired of the UIViewController containment three-step. Adds a convenience param if the destination superview is not actually the parent VC's main view.

	@implementation UIViewController (BHSContainment)


	- (void)bhs_addChildViewController:(UIViewController *)child {
	[self bhs_addChildViewController:child superview:self.view];
	}

	// Note this potentially forces view loads on both parent and child
	// Not a problem if used in -viewDidLoad or later
	// Use superview parameter with care. If it's not within the parent VC's hierarchy, you deserve to lose

drance / gist:4546014

Created January 16, 2013 09:57

Workaround to vanilla UICollectionView+UICollectionViewFlowLayout using non-integral origins, leading to blurry cells.

	@implementation BHSCollectionViewFlowLayout

	- (NSArray *)layoutAttributesForElementsInRect:(CGRect)rect {
	NSArray *allAttrs = [super layoutAttributesForElementsInRect:rect];
	for (UICollectionViewLayoutAttributes *attributes in allAttrs) {
	attributes.frame = CGRectIntegral(attributes.frame);
	}
	return allAttrs;
	}

drance / ScrollieScrollView.m

Created December 13, 2011 07:11

PoC for an accessory view that tracks scrolling a la Path

	// ScrollieScrollView
	// PoC for an accessory view that tracks scrolling
	// Created by Matt Drance (@drance) on 12/12/11.

	@interface ScrollieScrollView : UIScrollView ()
	@property (strong, nonatomic) UIView *thumb;
	@end

	@implementation ScrollieScrollView

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