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As we prepare to increment our NSDateComponents -year by 1, it's time once again for NSHipster end-of-the-year Reader Submissions! Last year, we got some mind-blowing tips and tricks. With the release of iOS 7 & Mavericks, and a year's worth of new developments in the Objective-C ecosystem, there should be a ton of new stuff to write up for this year.

Submit your favorite piece of Objective-C trivia, framework arcana, hidden Xcode feature, or anything else you think is cool, and you could have it featured in the year-end blowout article. Just comment on this gist below!

Here are a few examples of the kind of things I'd like to see:

Using NSStringFromSelector(@selector()) as a safer way to do KVC / KVO / NSCoding.
Panic's [rather surprising discovery about the internals of the Lightning Digital AV Adapter](http://www.panic.com/blog/the-lightning-di

It's with a heavy heart that I announce that Friday, May 31 2013 will be my last day at Heroku.

How can I possibly put into words what Heroku has meant to me these last six years? I can say it was a tremendous experience; or the opportunity of a lifetime; or the greatest thing I have ever been a part of. I can say that Heroku has been my life's work, as I did recently in a public blog post. All of those things are true, but none seem to capture the enormity of what's transpired these past six years.

I tend to focus on mechanical elements of a company: product, code, design, process. But what has surprised me the most at Heroku is that none of these things is the best part. The best part is the team.

I've never had the chance to work with a more singular group of people. Talented, passionate, skilled, dedicated. Most of all, sharing a set of values: elegance, craft, maniacal focus on simplicity; and an uncompromising belief that the future will be made of software, and how that software gets made will shape

	/* The Y combinator in Swift!

	For a discussion of what the heck this is all about, see http://www.ece.uc.edu/~franco/C511/html/Scheme/ycomb.html

	The nifty thing is that it allows us to implement recursion without the ability for a function to refer to itself from within its own definition.

	Note how we manage a recursive definition of factorial without any function referring to its own name.

	Thanks to @eridius for help with the SelfToUnderlying<T> type.
	*/

	require 'open-uri'
	require 'nokogiri'

	year = 2014
	doc = Nokogiri::HTML(open("https://developer.apple.com/videos/wwdc/#{year}/"))

	doc.search("p.download").each do \|download\|
	href = download.at("a").attr('href')
	uri = URI(href)
	uri.path = uri.path.split('/')[0...-1].join('/') + '/'

	@import MobileCoreServices;

	static CFStringRef UTTypeForImageData(NSData *data) {
	const unsigned char * bytes = [data bytes];

	if (data.length >= 8) {
	if (bytes[0] == 0x89 && bytes[1] == 0x50 && bytes[2] == 0x4E && bytes[3] == 0x47 && bytes[4] == 0x0D && bytes[5] == 0x0A && bytes[6] == 0x1A && bytes[7] == 0x0A) {
	return kUTTypePNG;
	}
	}

	static UIImage * UIImageForSwatchOfColorWithSize(UIColor *color, CGSize size) {
	UIImage *image = nil;

	CGRect rect = CGRectMake(0.0f, 0.0f, size.width, size.height);

	UIGraphicsBeginImageContext(rect.size);
	{
	CGContextRef c = UIGraphicsGetCurrentContext();

	CGContextSetFillColorWithColor(c, [color CGColor]);

	HTTP transfer protocols
	=======================

	Git supports two HTTP based transfer protocols. A "dumb" protocol
	which requires only a standard HTTP server on the server end of the
	connection, and a "smart" protocol which requires a Git aware CGI
	(or server module). This document describes both protocols.

	As a design feature smart clients can automatically upgrade "dumb"
	protocol URLs to smart URLs. This permits all users to have the

	#import <Foundation/Foundation.h>

	@interface JNWThrottledBlock : NSObject

	// Runs the block after the buffer time _only_ if another call with the same identifier is not received
	// within the buffer time. If a new call is received within that time period the buffer will be reset.
	// The block will be run on the main queue.
	//
	// Identifier and block must not be nil.
	+ (void)runBlock:(void (^)())block withIdentifier:(NSString *)identifier throttle:(CFTimeInterval)bufferTime;