Nate naterhat

beccadax / ArchVulture.h

Last active December 18, 2015 12:59

Allows you to add a "vulture": a block that will be executed when the object it's attached to is deallocated.

	#import <Foundation/Foundation.h>

	@interface NSObject (addVulture)

	// Do NOT use a block that captures this object.
	// If you capture it strongly, you'll create a retain cycle.
	// If you capture it weakly, you'll just get nil.
	// If you capture it unsafely, you'll start calling methods on a mostly-dealloced object!

	- (void)addVultureWithBlock:(dispatch_block_t)block;

Jaybles / UIDeviceHardware.h

Created October 28, 2011 19:33

UIDeviceHardware - Determine iOS device being used

	//
	// UIDeviceHardware.h
	//
	// Used to determine EXACT version of device software is running on.

	#import <Foundation/Foundation.h>

	@interface UIDeviceHardware : NSObject

	- (NSString *) platform;

lukeredpath / ExampleClass.m

Created June 30, 2011 22:18

Macro for creating your "shared instance" using GCD

	@implementation MySharedThing

	+ (id)sharedInstance
	{
	DEFINE_SHARED_INSTANCE_USING_BLOCK(^{
	return [[self alloc] init];
	});
	}

	@end

alex-cellcity / Version.m

Created May 30, 2011 04:55

Runtime iOS Version Checking

	/*
	* System Versioning Preprocessor Macros
	*/

	#define SYSTEM_VERSION_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedSame)
	#define SYSTEM_VERSION_GREATER_THAN(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedDescending)
	#define SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedAscending)
	#define SYSTEM_VERSION_LESS_THAN(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedAscending)
	#define SYSTEM_VERSION_LESS_THAN_OR_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedDescending)