Ben Stovold followben

Accessing an API using CoreData's NSIncrementalStore

Note: the original location of this article is on my blog, however, it is posted here too for better readability.

In this article, we will see how to use Core Data for accessing your API. We will use the Bandcamp API as our running example. I've only been experimenting with this code for a few days, so there might be mistakes in there.

I'm writing in response to events that have recently come to light involving a sexual assault at a tech conference. Background information can be found [here][1], [here][2], and [here][3] as well as on twitter and google.

I've been watching this from the sidelines, and I've been wrestling with several questions that I can't seem to shake and that I really don't have answers to.

I wear many hats, both in the tech community and others. I'm a coder, a speaker, a user group organizer, a conference organizer, and even a boss. Each of those roles colors how I see this, but there's one role that is overpowering in my reaction.

See, I'm a Dad. A dad of two beautiful and innocent girls who are 3 and 2. They have their whole lives in front of them and so the questions I'm struggling with are:

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


	#Steps
	pkgin install couchdb
	svccfg import /opt/local/share/smf/manifest/couchdb.xml
	svcadm enable couchdb

	#Test
	curl http://127.0.0.1:5984/
	{"couchdb":"Welcome","version":"1.0.1"}

	@implementation MySharedThing

	+ (id)sharedInstance
	{
	DEFINE_SHARED_INSTANCE_USING_BLOCK(^{
	return [[self alloc] init];
	});
	}

	@end

	/*
	File: KeychainItemWrapper.h
	Abstract:
	Objective-C wrapper for accessing a single keychain item.

	Version: 1.2 - ARCified

	Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple
	Inc. ("Apple") in consideration of your agreement to the following
	terms, and your use, installation, modification or redistribution of

	// $ clang -framework Foundation -o unicode-is-hard-lets-go-shopping unicode-is-hard-lets-go-shopping.m && ./unicode-is-hard-lets-go-shopping
	// 2013-03-01 17:56:56.132 unicode-is-hard-lets-go-shopping[3390:707] string1='café', string2='café', string1.length=4, string2.length=5, [string1 isEqualToString:string2]=NO
	// 2013-03-01 17:56:56.134 unicode-is-hard-lets-go-shopping[3390:707] precomposedString1='café', precomposedString2='café', precomposedString1.length=4, precomposedString2.length=4, [precomposedString1 isEqualToString:precomposedString2]=YES

	#import <Foundation/Foundation.h>

	int main (int argc, const char * argv[]) {
	@autoreleasepool {
	NSString *string1 = [NSString stringWithUTF8String:"\x63\x61\x66\xC3\xA9\x00"];
	NSString *string2 = [NSString stringWithUTF8String:"\x63\x61\x66\x65\xCC\x81\x00"];

	#import <Foundation/Foundation.h>

	@interface NSObject (Subclasses)

	+ (NSSet *) subclasses_xcd;

	@end

	---
	language: objective-c
	before_script:
	- ./scripts/travis/add-key.sh
	after_script:
	- ./scripts/travis/remove-key.sh
	after_success:
	- ./scripts/travis/testflight.sh
	env:
	global:

	; Comments start with semicolons.

	; Clojure is written in "forms", which are just
	; lists of things inside parentheses, separated by whitespace.
	;
	; The clojure reader assumes that the first thing is a
	; function or macro to call, and the rest are arguments.
	;
	; Here's a function that sets the current namespace:
	(ns test)