Josh Lieberman JALsnipe

Note: This is an older post that I did back when I thought I might have time to be a blogger. Oh I was oh so wrong. However, it has proven useful for some folks on stackoverflow. Thus I'm keeping it alive here on Gist.

One of my past projects dealt heavily with an open source Apple technology called HTTP Live Streaming. It’s an HTTP based streaming protocol that at its most fundamental level provides a way to stream video and audio from just about any server with nothing but a few free software tools provided by Apple**. However, it has a few additional features that I think make it a really exciting tool. Yet, I haven’t seen HTTP Live Streaming used very much. This is probably mainly due to the combination of a lack of good/clear documentation, and Apple’s Live Streaming Developer Tools being command line based also make the barrier to entry higher than many developers want to deal with.

The hope is to share my understanding of how to use this technology to:

#Loading Tweaks in the Simulator

With the latest updates to the simulator, this turns out to be pretty simple:

You need to be using kirb/theos

In order not to require MobileSubstrate to be loaded and your tweak to be compiled for i386/x86_64, add

In your makefile:

What is the appeal of dynamically-typed languages?

Kris Nuttycombe asks:

I genuinely wish I understood the appeal of unityped languages better. Can someone who really knows both well-typed and unityped explain?

I think the terms well-typed and unityped are a bit of question-begging here (you might as well say good-typed versus bad-typed), so instead I will say statically-typed and dynamically-typed.

I'm going to approach this article using Scala to stand-in for static typing and Python for dynamic typing. I feel like I am credibly proficient both languages: I don't currently write a lot of Python, but I still have affection for the language, and have probably written hundreds of thousands of lines of Python code over the years.

NSInternalInconsistencyException

Intermittently, Parse throws an exception when [[PFInstallation currentInstallation] addUniqueObject:forKey:] is called:

Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Operation is invalid after previous operation.'

	# Type(<scope>): <subject>

	# <body>

	# <footer>

	# Type should be one of the following:
	# * feat (new feature)
	# * fix (bug fix)
	# * docs (changes to documentation)

	/// Observes a run loop to detect any stalling or blocking that occurs.
	///
	/// This class is thread-safe.
	@interface GHRunLoopWatchdog : NSObject

	/// Initializes the receiver to watch the specified run loop, using a default
	/// stalling threshold.
	- (id)initWithRunLoop:(CFRunLoopRef)runLoop;

	/// Initializes the receiver to detect when the specified run loop blocks for

	import Darwin

	let handle = dlopen("/usr/lib/libc.dylib", RTLD_NOW)
	let sym = dlsym(handle, "random")
	let functionPointer = UnsafeMutablePointer<() -> CLong>(sym)
	let result = functionPointer.memory()

	println(result)

	#import <Foundation/Foundation.h>

	#if __IPHONE_OS_VERSION_MIN_REQUIRED < 80000

	@interface NSString (PSPDFModernizer)

	// Added in iOS 8, retrofitted for iOS 7
	- (BOOL)containsString:(NSString *)aString;

	@end

	-(void) logInWithTwitter
	{
	// check Twitter is configured in Settings or not
	if ([SLComposeViewController isAvailableForServiceType:SLServiceTypeTwitter]){
	self.accountStore = [[ACAccountStore alloc] init]; //retain ACAccountStore
	ACAccountType *twitterAcc = [self.accountStore accountTypeWithAccountTypeIdentifier:ACAccountTypeIdentifierTwitter];
	[self.accountStore requestAccessToAccountsWithType:twitterAcc options:nil completion:^(BOOL granted, NSError *error){
	//permission is granted
	if (granted){
	self.account = [[self.accountStore accountsWithAccountType:twitterAcc] lastObject];


	func fuzzySearch(var originalString: String, var stringToSearch: String, caseSensitive: Bool = false)->Bool {

	if countElements(originalString)==0 \|\| countElements(stringToSearch)==0 {
	return false
	}

	if countElements(originalString) < countElements(stringToSearch) {
	return false
	}

Josh Lieberman JALsnipe

What is the appeal of dynamically-typed languages?

NSInternalInconsistencyException

References