preble

protocol Protocol {
    func methodInProtocol() -> String
}

extension Protocol {
    func methodInProtocol() -> String {
        return "Protocol"
    }
    func methodOnExtension() -> String {

preble

import Foundation

/// Helper object for more Swift-like KVO. To create, call NSObject.addObserverForKeyPath(_:handler:).
class KeyValueObserver: NSObject {
	
	private weak var observing: NSObject?
	private var keyPath: String
	private var handler: () -> Void
	
	private init(observing: NSObject, keyPath: String, handler: () -> Void) {

preble

/// Convert a Pivotal Tracker story id (#1234, 1234) or URL into a Markdown link using the story number as the link text.
function markdownTrackerLink(text) {
  var regex = /\s*(http.*pivotaltracker\.com\/story\/show\/(\d+)|#?(\d+))\s*/;
  var id;
  var groups;

  if (regex.test(text)) {
    groups = regex.exec(text);
    id = groups[3] || groups[2];
    return "[#"+id+"](https://www.pivotaltracker.com/story/show/"+id+")";

preble

Objective-C Bracing Style

I'm Adam Preble and this is the bracing style I like. Please don't use it unless you (a) like it, or (b) are contributing to a project of mine.

Rules

• Braces go on the next line for:
  • Method definitions.
  • if blocks:
  • After case statements, but only if required by local variables within the case.

preble

extension ErrorType {
	
	var myLocalizedDescription: String {
		if self.dynamicType == NSError.self {
			return ((self as Any) as! NSError).localizedDescription
		}
		else {
			return "\(self)"
		}
	}

preble

NSArray *things = ^{
    NSMutableArray *tmpArray = [NSMutableArray arrayWithCapacity:numThings];
    for (int i = 0; i < numThings; i++)
    {
        [tmpArray addObject: ... ];
    }
    return [tmpArray copy];
}();

preble

iOS & Cocoa Resources

• Big Nerd Ranch Blog (feat. Mark Dalrymple)
• iOS Dev Weekly (mailing list)
• NSHipster
• WWDC Videos
  • WWDC 2013
  • WWDC 2012
• iOS Programming Guide
• objc.io

preble

import Foundation

/// Call a throwing block synchronously.
func dispatch_sync(queue: dispatch_queue_t, block: () throws -> ()) throws {
    var error: ErrorType?
    dispatch_sync(queue) {
        do {
            try block()
        } catch let caughtError {
            error = caughtError

preble

// A macro I wrote a few years back to assist in checking OpenGL error codes.
// Add to a .h or at the top of your implementation file:

#define GLERR do {\
        GLuint glerr;\
        while((glerr = glGetError()) != GL_NO_ERROR)\
            fprintf(stderr, "%s:%d glGetError() = 0x%04x", __FILE__, __LINE__, glerr);\
    } while (0)

// Sprinkle in "GLERR;" after failure-prone OpenGL calls.

preble

//  Testing thread safety of rand() and random(); for more see:
//    http://adampreble.net/blog/2012/09/mtrandom-an-objective-c-random-number-generator/
//  Created by Adam Preble on 9/3/12
//  Copyright (c) 2012 Adam Preble. All rights reserved.
//

#import <Foundation/Foundation.h>

#if 1
#define test_srandom srandom