ddeville

//
//  main.m
//  KVO
//
//  Created by Damien DeVille on 10/22/13.
//  Copyright (c) 2013 Damien DeVille. All rights reserved.
//

#import <Foundation/Foundation.h>

ddeville

So:
id boxedValue = objc_msgSend(self, mappingSelector, instance, value, boxingParameters);

would become:
id boxedValue = ((id (*)(id, SEL, id, id, id))objc_msgSend)(self, mappingSelector, instance, value, boxingParameters);

The first `id` and `SEL` are basically `self` and `_cmd`, the first 2 arguments in any objc_msgSend.

ddeville

rax - accumulator
rbx - base
rcx - count
rdx - data
r8-15

rsi - source index
rdi - destination index

rbp - base pointer

ddeville

//
//  Created by Damien DeVille on 6/23/13.
//  Copyright (c) 2013 Damien DeVille. All rights reserved.
//
 
#import <Foundation/Foundation.h>
#import <objc/runtime.h>
 
extern id _objc_setNilReceiver(id newNilReceiver);
 

ddeville

@interface SomeViewController : UIViewController

@end

@implementation SomeViewController

- (IBAction)show:(id)sender
{
	UIImagePickerController *pickerController = [UIImagePickerController new];
	[pickerController setDelegate:(id)self];

ddeville

@interface RetrievalOperation : NSOperation
+ (id)retrievalOperationWithBlock:(id (^)(void))block;
@property (readonly, strong, nonatomic) id result;
@end

@interface RetrievalOperation (/* Private */)
@property (readwrite, strong, nonatomic) id result;
@property (copy, nonatomic) id (^block)(void);
@end

ddeville

#if TARGET_OS_IPHONE
#import <MobileCoreServices/MobileCoreServices.h>
#else
#import <CoreServices/CoreServices.h>
#endif

/*
	MIME type to UTI
*/
NSURLResponse *response = ... // assume a URL response from somewhere else.

ddeville

- (void)printViewHierarchy:(UIView *)view
{
	if (view == nil)
		return;
	
	NSLog(@"%@", view);
	
	for (UIView *subview in [view subviews])
	{
		[self printViewHierarchy: subview];