natecook1000

Greetings and salutations, NSHipsters!

As the year winds down, it's a tradition here at NSHipster to ask you, dear readers, to offer up your favorite tricks and tips from the past year as gifts to your fellow hipsters. With iOS 9, El Capitan, brand new watch- and tvOS's, and the open-sourcing of some minor Apple-related tech, there's bound to be lots to share.

Submit your favorite piece of Swift or @objc trivia, helpful hints, unexpected discoveries, useful workarounds, useless fascinations, or anything else you found cool this year. Just comment below!

If you need inspiration, try [the list from last year][2015], or [from the year before][2014], or [from the year before that][2013].

github-xiaogang

#if DEBUG

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

@implementation NSObject (DEBUGGING)

+ (void)replaceClassMethodWithClass: (Class)clazz originMethod: (SEL)originMethodSEL withMethod: (SEL)newMethodSEL
{
    Method originMethod = class_getInstanceMethod(clazz, originMethodSEL);

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

maciekish

//
//  UINavigationBar+CustomHeight.h
//
//  Copyright (c) 2014 Maciej Swic
//
//  Permission is hereby granted, free of charge, to any person obtaining a copy
//  of this software and associated documentation files (the "Software"), to deal
//  in the Software without restriction, including without limitation the rights
//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
//  copies of the Software, and to permit persons to whom the Software is

atduskgreg

// GetWindowList
// A utility for printing out the name and windowId for every current window.
// Use in conjunction with 'screencapture -l' to automate screenshots.

// compile with gcc thusly:
// gcc -framework carbon -framework foundation -framework cocoa -x objective-c -std=c99 GetWindowList.c -o GetWindowList

#include <Carbon/Carbon.h>
#import <objc/Object.h>
#import <Foundation/Foundation.h>

n-b

//
//  NBResponderChainUtilities.h
//  
//  Created by Nicolas @ bou.io on 19/04/13.
//

#import <UIKit/UIKit.h>

@interface UIView (NBResponderChainUtilities)
- (UIView*) nb_firstResponder; // Recurse into subviews to find one that responds YES to -isFirstResponder

0xced

#import <Foundation/Foundation.h>

@interface NSObject (Subclasses)

+ (NSSet *) subclasses_xcd;

@end

0xced

#import <objc/runtime.h>

@implementation NSObject (ARCZombie)

+ (void) load
{
	const char *NSZombieEnabled = getenv("NSZombieEnabled");
	if (NSZombieEnabled && tolower(NSZombieEnabled[0]) == 'y')
	{
		Method dealloc = class_getInstanceMethod(self, @selector(dealloc));

0xced

#import <UIKit/UIKit.h>

@interface UIDevice (HostUUID)

- (NSString *) xcd_uniqueIdentifier;

@end