javan

Found this tip in comment here: http://www.tipb.com/2011/01/04/tipb-bug-home-button-working-iphone/

1.) Open any application

2.) Press and hold the power button until the slide to shutdown swipe bar appears.

3.) Release Power button

4.) Press and hold Home button Lightly 
until screen returns to icon screen

landonf

#import <Foundation/Foundation.h>

#import <pthread.h>
#import <execinfo.h>
#import <string.h>
#import <stdint.h>

/*
 * A signal handler that is broken in two ways:
 * 1) The handler calls APIs that are not declared to be async-safe and may deadlock or otherwise fail.

landonf

#import <Foundation/Foundation.h>

static void unsafe_signal_handler (int signo) {
    signal(signo, SIG_DFL);
    
    /* Attempt to use ObjC to fetch the backtrace. Will trigger deadlock. */
    [NSThread callStackSymbols];
}

int main(int argc, char *argv[]) {

0xced

/*
Licensed under the MIT License

Copyright (c) 2011 Cédric Luthi

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

mwaterfall

/*
 *  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)

preble

#import "NSString+ConcurrentEnumeration.h"

@implementation NSString (ConcurrentLineEnumeration)

- (void)enumerateConcurrentlyWithOptions:(NSStringEnumerationOptions)options
                              usingBlock:(void (^)(NSString *substring))block
{
  dispatch_group_t group = dispatch_group_create();
  
  [self enumerateSubstringsInRange:NSMakeRange(0, [self length])

andymatuschak

//
//  NSObject+BlockObservation.h
//  Version 1.0
//
//  Andy Matuschak
//  [email protected]
//  Public domain because I love you. Let me know how you use it.
//

#import <Cocoa/Cocoa.h>