nicklockwood

/// Withable is a simple protocol to make constructing
/// and modifying objects with multiple properties
/// more pleasant (functional, chainable, point-free)
public protocol Withable {
  init()
}

public extension Withable {
  /// Construct a new instance, setting an arbitrary subset of properties
  init(with config: (inout Self) -> Void) {

tclementdev

libdispatch efficiency tips

The libdispatch is one of the most misused API due to the way it was presented to us when it was introduced and for many years after that, and due to the confusing documentation and API. This page is a compilation of important things to know if you're going to use this library. Many references are available at the end of this document pointing to comments from Apple's very own libdispatch maintainer (Pierre Habouzit).

My take-aways are:

• You should create very few, long-lived, well-defined queues. These queues should be seen as execution contexts in your program (gui, background work, ...) that benefit from executing in parallel. An important thing to note is that if these queues are all active at once, you will get as many threads running. In most apps, you probably do not need to create more than 3 or 4 queues.

• Go serial first, and as you find performance bottle necks, measure why, and if concurrency helps, apply with care, always validating under system pressure. Reuse

danielctull

extension UICollectionViewFlowLayout {

    typealias DelegateMethod<Key, Value> = ((UICollectionView, UICollectionViewLayout, Key) -> Value)

    private var delegate: UICollectionViewDelegateFlowLayout? {
        return collectionView?.delegate as? UICollectionViewDelegateFlowLayout
    }

    func retrieve<Key, Value>(

timonus

//  UIWindow+AppSwitchScrollStopper.h
//  Created by Tim Johnsen on 3/27/16.

#import <UIKit/UIKit.h>

@interface UIWindow (AppSwitchScrollStopper)

/// Call this early on in your app's lifecycle to avoid
/// scroll-related flashing when your app resumes from the background
- (void)installAppSwitchScrollStopper;

davemo

HOTS Map Breakdowns

As transcribed by watching Dreadnaughts twitch breakdown here: http://www.twitch.tv/dreadnaught_heroes/v/46261889?t=01h35m19s

Towers of Doom

• Medium/Large map (tri-lane)
• Laning Phase: 1-1-3 (alternatively, 1-4 roaming mid/bot for 4)
  • Bottom lane prioritized: merc camps push bot lane and can get core shots
• Top lane is safe lane

zacwest

let styles: [UIFont.TextStyle] = [
    // iOS 17
    .extraLargeTitle, .extraLargeTitle2,
    // iOS 11
    .largeTitle,
    // iOS 9
    .title1, .title2, .title3, .callout,
    // iOS 7
    .headline, .subheadline, .body, .footnote, .caption1, .caption2,
]

natecook1000

Greetings and salutations, NSHipsters!

As the year winds down, it's a tradition here at NSHipster to ask you, dear readers, to offer up your favorite tricks and tips from the past year as gifts to your fellow hipsters. With iOS 9, El Capitan, brand new watch- and tvOS's, and the open-sourcing of some minor Apple-related tech, there's bound to be lots to share.

Submit your favorite piece of Swift or @objc trivia, helpful hints, unexpected discoveries, useful workarounds, useless fascinations, or anything else you found cool this year. Just comment below!

If you need inspiration, try [the list from last year][2015], or [from the year before][2014], or [from the year before that][2013].

mbbx6spp

Alternatives to the "Atlassian Stack"

Fuller stack alternatives (replaces at least two of the Atlassian stack)

• Phabricator

• Github

• Gitlab

• Taiga

• Redmine

listochkin

FAQ по Gitter-чатам группы Dev-UA

Так получилось, что мы открываем сейчас достаточно много чатов в [Gitter.im][1]: часто это совсем новые для нас сообщества (как [PHP-чат][2], например), а часто - это уже существующие чаты, которые мы создали и администрировали в Skype (например, [Frontend-UA][3]). Не зависимо от того, новый ли это чат или "переезжающий", нам раз за разом задают одни и те же вопросы. Здесь мы собрали их и подготовили несколько ответов.

Почему Gitter?

1. Больше 300 человек в чате (это лимит в Skype)

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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