mattt

Season's Greetings, NSHipsters!

As the year winds down, and we take a moment to reflect on our experiences over the past months, one thing is clear: 2014 has been an incredible year professionally for Apple developers. So much has happened in such a short timespan, and yet it's hard to remember our relationship to Objective-C before Swift, or what APIs could have captivated our imagination as much as iOS 8 or WatchKit.

It's an NSHipster tradition to ask you, dear readers, to send in your favorite tips and tricks from the past year for publication over the New Year's holiday. This year, with the deluge of new developments—both from Cupertino and the community at large—there should be no shortage of interesting tidbits to share.

Submit your favorite piece of Swift or 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!

If you're wondering about what to post, look to

nicklockwood

#import <UIKit/UIKit.h>
#import <objc/runtime.h>


@implementation NSCache (Fix)

+ (void)load
{
    //swizzle init
    Method a = class_getInstanceMethod(self, @selector(init));

mikeash

// clang -fobjc-arc -framework Foundation runtime-class.m

#import <Foundation/Foundation.h>

#import <objc/runtime.h>


@interface Person : NSObject

- (id)initWithFirstName: (NSString *)firstName lastName: (NSString *)lastName age: (NSUInteger)age;

mattt

Greetings, NSHipsters!

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

0xced

#import <Foundation/Foundation.h>

@interface NSObject (Subclasses)

+ (NSSet *) subclasses_xcd;

@end

steipete

        [[NSNotificationCenter defaultCenter] addObserverForName:nil object:nil queue:nil usingBlock:^(NSNotification *note) {
            NSLog(@"%@: %@", note.name, note.userInfo);
        }];

lessthanyouthink

//
//  CJProperRotationNavigationController.h
//
//  Created by Charles Joseph on 2012-10-01.
//

#import <UIKit/UIKit.h>

@interface CJProperRotationNavigationController : UINavigationController

0xced

//
// Copyright (c) 2012-2015 Cédric Luthi / @0xced. All rights reserved.
//

#import <Foundation/Foundation.h>

#if TARGET_OS_SIMULATOR

static const char *fakeCarrier;
static const char *fakeTime;

danielpunkass

function fixpng ()
{
        if [[ ! -f $1 ]] ; then
                echo "Usage: fixpng <inputFiles> [outputFile]"
                return -1
        else
                local inputFile=$1
                local outputFile=$1
                if [[ -e $2 ]] ; then
                        outputFile=$2

nicklockwood

//
//  ARC Helper
//
//  Version 2.2
//
//  Created by Nick Lockwood on 05/01/2012.
//  Copyright 2012 Charcoal Design
//
//  Distributed under the permissive zlib license
//  Get the latest version from here: