olegam

This template let's you easily implement a property getter like this:

- (UIView *)myView {
	if (!_myView) {
		_myView = [UIView new];
	}
	return _myView;
}

kluivers

# .gitignore in use by Joris Kluivers
#
# Latest version:
# https://gist.github.com/gists/1923197

*.DS_Store

# Xcode
*.pbxuser
*.mode1v3

Diggz

It's 8:00 o'clock on a Friday
The regular crowd shuffles in
there's an old man sitting next to me
making love to his beer

la la di di da
la la di di da

Sing us a song, you're the piano man!
sing us a song tonight

mikeash

// clang -framework Foundation -fobjc-arc -O3 test.m

#import <Foundation/Foundation.h>


@interface Slice : NSObject
@property NSInteger start;
@property NSInteger length;
@end
@implementation Slice

brentsimmons

BOOL RSIsEmpty(id obj) {
	return obj == nil || obj == [NSNull null] || ([obj respondsToSelector:@selector(length)] && [(NSData *)obj length] == 0) || ([obj respondsToSelector:@selector(count)] && [obj count] == 0);
}


BOOL RSStringIsEmpty(NSString *s) {
    /*22 Feb. 2011: added NSNull check. JSON parser can put a null where we expect a string, and NSNull throws an exception when checking length. Since [NSNull null] is, arguably, emptiness, it makes sense to include it.*/
	return s == nil || (id)s == (id)[NSNull null] || [s length] == 0;
}

NachoSoto

# Using https://github.com/Anviking/Decodable as example:

xcodebuild -sdk appletvsimulator -project Decodable.xcodeproj -configuration Release -scheme Decodable-tvOS ONLY_ACTIVE_ARCH=NO clean build

# This fails with http://www.openradar.me/22993940

steipete

static NSData *PSPDFCalculateSHA256FromFileURL(NSURL *fileURL, CC_LONG dataLength, NSError **error) {
    NSCParameterAssert(fileURL);

    NSData *shaData;

    int fd = open(fileURL.path.UTF8String, O_RDONLY);
    if (fd < 0) {
        if (error) *error = [NSError pspdf_errorWithCode:PSPDFErrorCodeUnableToOpenPDF description:@"Failed to open file for calculating SHA256."];
        return nil;
    }

steipete

@implementation UIPopoverPresentationController (PSPDFAdditions)

+ (void)load {
    PSPDFSwizzleMethodImplementation(self, @selector(containerViewWillLayoutSubviews), ^(UIPopoverPresentationController *_self) {
        // Refresh bar button view internals
        [_self pspdf_updateBarButtonView];
        ((void( *)(id, SEL))objc_msgSend)(_self, PSPDFPrefixedSelector(containerViewWillLayoutSubviews));
    });
}

odrobnik

- (IBAction)handleTap:(id)sender
{
   BOOL isHiding = !_statusBarHidden;
   _statusBarHidden = isHiding;
   
   [UIView animateWithDuration:UINavigationControllerHideShowBarDuration delay:0 options:0
                    animations:^{
                       [self setNeedsStatusBarAppearanceUpdate];
                    }
                    completion:NULL];

mattt

static NSInteger NSJSONReadingFuckNSNulls = (1UL << 3);

@implementation NSJSONSerialization (FuckNulls)

+ (void)load {
    Method originalMethod = class_getClassMethod(self, @selector(JSONObjectWithData:options:error:));
    IMP swizzledImplementation = imp_implementationWithBlock([^id (id _self, NSData *_data, NSJSONReadingOptions _opt, NSError **_error){
        NSInputStream *stream = [NSInputStream inputStreamWithData:_data];
        [stream open];