lukeredpath

@implementation MySharedThing

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

@end

jhankin

//
//  SOInsetLabel.h
//
//  Created by Joseph Hankin on 11/2/12.
//  From code posted by Rob Mayoff.
//  http://stackoverflow.com/questions/8467141/ios-how-to-achieve-emboss-effect-for-the-text-on-uilabel

//  Copyright (c) 2012 Joseph Hankin. All rights reserved.
//

alloy

Obviously, the simplest solution would be for the client to share their account details or add us as ‘team admin’, but that is not what this is about.

On https://developer.apple.com

1. [Add us to your iOS Developer Program as ‘team member’.][1]
2. [Create a ‘Distribution Certificate’, if you haven’t got one already.][2]
3. [Create a ‘App Store Distribution Provisioning Profile’.][3]
4. [Export the ‘Distribution Certificate’ assets and send the export and password to us.][4] (For security sake, it’s a good idea to send us the password via other means than the exported certificate. E.g. by phone/SMS.)

On https://itunesconnect.apple.com

mpospese

CGRect CGRectIntegralScaledEx(CGRect rect, CGFloat scale)
{
    return CGRectMake(floorf(rect.origin.x * scale) / scale, floorf(rect.origin.y * scale) / scale, ceilf(rect.size.width * scale) / scale, ceilf(rect.size.height * scale) / scale);
}

CGRect CGRectIntegralScaled(CGRect rect)
{
    return CGRectIntegralScaledEx(rect, [[UIScreen mainScreen] scale]);
}

steipete

// Taken from the commercial iOS PDF framework http://pspdfkit.com.
// Copyright (c) 2014 Peter Steinberger, PSPDFKit GmbH. All rights reserved.
// Licensed under MIT (http://opensource.org/licenses/MIT)
//
// You should only use this in debug builds. It doesn't use private API, but I wouldn't ship it.

// PLEASE DUPE rdar://27192338 (https://openradar.appspot.com/27192338) if you would like to see this in UIKit.

#import <objc/runtime.h>
#import <objc/message.h>

bddckr

// See http://stackoverflow.com/a/257424/283482
// Normally a "do {…} while (0)" is used to prevent the problem described in the linked answer,
// but this would prevent us from using "continue" or "break" in the block parameter.
// The problem is fixed thanks to the "if (1) {…}", doing the same as the "do {…} while (0)".

#define AssertTrueOrRunBlock(condition, block, description, ...)\
if (1) {\
	__PRAGMA_PUSH_NO_EXTRA_ARG_WARNINGS\
	BOOL check = !!(condition);\
	NSCAssert(check, (description), ##__VA_ARGS__);\

nicklockwood

Storyboard Segues initially seem like a pretty cool way to construct interfaces using minimal glue code. But actually, ordinary nibs already support this, and in a much more flexible way.

Certainly, a Storyboard lets you bind a button action up to display a view controller with no code, but in practice you will usually want to pass some data to the new controller, depending on which button you used to get there, and this means implementing the -prepareForSegue:sender: method, which rapidly becomes a giant if/elseif statement of doom, negating most of the benefit of the codeless segue:

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    if ([segue.identifier isEqualToString:@"modalSegue"])
    {
        ModalViewController *controller = (ModalViewController *)segue.destination;

controller.someProperty = someValue;

steipete

static BOOL PSPDFIsDevelopmentBuild(void) {
#if TARGET_IPHONE_SIMULATOR
    return YES;
#else
    static BOOL isDevelopment = NO;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        // There is no provisioning profile in AppStore Apps.
        NSData *data = [NSData dataWithContentsOfFile:[NSBundle.mainBundle pathForResource:@"embedded" ofType:@"mobileprovision"]];
        if (data) {

matej

//
//  CALayer+MBAnimationPersistence.h
//
//  Created by Matej Bukovinski on 19. 03. 14.
//  Copyright (c) 2014 Matej Bukovinski. All rights reserved.
//

#import <QuartzCore/QuartzCore.h>

staltz

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

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This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

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