robertmryan

func performUsingGroup() {
    let dq1 = DispatchQueue.global(qos: .default)
    let dq2 = DispatchQueue.global(qos: .default)
    let group = DispatchGroup()
    
    for i in 1...3 {
        dq1.async(group: group) {
            print("\(#function) DispatchQueue 1: \(i)")
        }
    }

robertmryan

class ViewController: UIViewController {

    private var paths = [UIBezierPath]()
    
    private let shapeLayer: CAShapeLayer = {
        let shapeLayer = CAShapeLayer()
        shapeLayer.lineWidth = 5
        shapeLayer.fillColor = UIColor.clear.cgColor
        shapeLayer.strokeColor = UIColor.blue.cgColor
        return shapeLayer

smileyborg

// UICollectionView Objective-C example

- (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
        
    NSIndexPath *selectedIndexPath = [[self.collectionView indexPathsForSelectedItems] firstObject];
    if (selectedIndexPath != nil) {
        id<UIViewControllerTransitionCoordinator> coordinator = self.transitionCoordinator;
        if (coordinator != nil) {
            [coordinator animateAlongsideTransition:^(id<UIViewControllerTransitionCoordinatorContext> context) {

gonzalezreal

iOS Cell Registration & Reusing with Swift Protocol Extensions and Generics

A common task when developing iOS apps is to register custom cell subclasses for both UITableView and UICollectionView. Well, that is if you don’t use Storyboards, of course.

Both UITableView and UICollectionView offer a similar API to register custom cell classes:

public func registerClass(cellClass: AnyClass?, forCellWithReuseIdentifier identifier: String)
public func registerNib(nib: UINib?, forCellWithReuseIdentifier identifier: String)

onevcat

let timer = NSTimer.scheduledTimerWithTimeInterval(1.0, target: NSBlockOperation { 
              [weak self] in
              // Do something...
            }, selector: "main", userInfo: nil, repeats: false)

mattt

// See: https://devforums.apple.com/message/1000934#1000934

import Foundation

// Logic

operator prefix ¬ {}
@prefix func ¬ (value: Bool) -> Bool {
    return !value
}

staltz

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

---

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.

---

0thernet

WWDC 2014

Extending Swift

Making something anonymous

for (key, _) in dictionary {
	println(key)
}

johanneswuerbach

---
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:

Integralist

/*
 * Scaffolding
 * Basic and global styles for generating a grid system, structural layout, and page templates
 * ------------------------------------------------------------------------------------------- */

.container
Sets a width of 940px which also centres the content (clears floated elements before/after)

.container-fluid
Sets a minimum width of 940px (clears floated elements before/after)