amrangry

//
//  ValueWrapper.swift
//  ADKATech.com
//
//  Created by Amr Elghadban on 9/20/18.
//  Copyright © 2018 Mobile DevOps. All rights reserved.
//

import Foundation

a-voronov

class ReadWriteQueue {
    private let specificKey = DispatchSpecificKey<String>()
    private let queue: DispatchQueue

    private var isAlreadyInQueue: Bool {
        return DispatchQueue.getSpecific(key: specificKey) == queue.label
    }

    init(label: String = "read-write.queue") {
        queue = DispatchQueue(label: label, attributes: .concurrent)

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

rodricels

# My tmux configuration, partly based on https://github.com/wbkang/wbk-stow/blob/master/tmux-config/.tmux.conf

# Scroll History
set -g history-limit 50000

# show messages for 4 seconds instead
set -g display-time 4000

# set first window to index 1 (not 0) to map more to the keyboard layout
set-option -g renumber-windows on

A-gambit

How do you make friends with React and FRP? 🤔 Start to develop your application using Focal.

This is a CFP for the ⚡️Lightning⚡️ talk at awesome ReactiveConf 2017. If you'd like to see this talk, please 🌟 star🌟 this summary and retweet my tweet 🙂 #ReactiveConf

Functional reactive programming (FRP) is very popular nowadays. The JavaScript community provides us with excellent tools like RxJS, Bacon, and Kefir. But, as we know, they have nothing to do with React. So how we can use the power of FRP in our React application? Using the correct state management, we can make friends with FRP and React and make our application truly reactive. In my lightning talk, I will talk about Focal

kmikael

import UIKit

class HomeCollectionViewFlowLayout: UICollectionViewFlowLayout {
    
    var isSetUp = false
    
    override func prepare() {
        super.prepare()
        
        setUpIfNeeded()

cojoj

Purpose of this list is to gather a source of information on how many people are working on iOS application.
I often wonder how many people are behind Facebook's app or Twitter's. If you're as curious as me, please share and please add apps 😉.

* - it's a rumoured value only. Needs confirmation from someone inside the company.

1. Fishbrain - 3
2. Artsy - 5
3. Truecaller - 5
4. Lifesum - 4 or 5
5. Spotify - 50*

kharrison

import Foundation

struct Country {
    let name: String
    let capital: String
    var visited: Bool
}

extension Country: Equatable {
    static func == (lhs: Country, rhs: Country) -> Bool {

mackuba

MacBook Pro 2016 - an iOS developer's review

Here are some thoughts about my new MacBook Pro that I've been using for the last few weeks (the Santa Claus from DHL brought it to me just before Christmas), hopefully this will help someone who's considering getting one.

Note: this is written from the perspective of a person who switched to the MBP from a 2015 13" MacBook Air (i7) and also has a 2012 21" iMac. Your experiences will obviously be different if you have e.g. a fairly recent 15" Retina MacBook Pro.

Specs

• MacBook Pro 15", late 2016
• Core i7 2.9 GHz (4 cores)

iThinker

import Foundation

class AssociationsStorage {
    
    class Associations {
        
        private var storage: [AnyHashable: Any] = [:]
        
        func setValue(_ value: Any, forKey key: AnyHashable) {