lattner

Swift Concurrency Manifesto

Author: Chris Lattner

Chinese Translation by Jason Yu

Contents

• Introduction
• Overall Vision

samsonjs

//
//  SnippetVideoCompositionInstruction.swift
//  OneSecondEveryday
//
//  Created by Sami Samhuri on 2016-09-05.
//  Copyright © 2016 1 Second Everyday. All rights reserved.
//

import Foundation
import AVFoundation

kandelvijaya

//: Playground - noun: a place where code can play

import UIKit

//Most precise time keeper
// for more information on the benchmarks go to www.kandelvijaya.com

func timeBlockWithMach(_ block: () -> Void) -> TimeInterval {
    var info = mach_timebase_info()
    guard mach_timebase_info(&info) == KERN_SUCCESS else { return -1 }

steipete

//
//  SpinlockTestTests.swift
//  SpinlockTestTests
//
//  Created by Peter Steinberger on 04/10/2016.
//  Copyright © 2016 PSPDFKit GmbH. All rights reserved.
//

import XCTest

Justasic

import os
import socket
from OpenSSL import crypto, SSL

# OpenVPN is fairly simple since it works on OpenSSL. The OpenVPN server contains
# a root certificate authority that can sign sub-certificates. The certificates
# have very little or no information on who they belong to besides a filename
# and any required information. Everything else is omitted or blank.
# The client certificate and private key are inserted into the .ovpn file
# which contains some settins as well and the entire thing is then ready for

mojodna

sudo yum -y update
sudo yum-config-manager --enable epel
sudo yum -y install make automake gcc gcc-c++ libcurl-devel proj-devel geos-devel
cd /tmp
curl -L http://download.osgeo.org/gdal/2.0.0/gdal-2.0.0.tar.gz | tar zxf -
cd gdal-2.0.0/
./configure --prefix=/usr/local --without-python
make -j4
sudo make install

calt

// Does not work on iOS 14.0 or later, keeping the gist just for reference.
extension UITabBar {
    override open func sizeThatFits(size: CGSize) -> CGSize {
        super.sizeThatFits(size)
        var sizeThatFits = super.sizeThatFits(size)
        sizeThatFits.height = 71
        return sizeThatFits
    }
}

JeOam

Author: https://www.cyanhall.com/

1. The Layer Tree

Core Animation's original name is Layer Kit

Core Animation is a compositing engine; its job is to compose different pieces of visual content on the screen, and to do so as fast as possible. The content in question is divided into individual layers stored in a hierarchy known as the layer tree. This tree forms the underpinning for all of UIKit, and for everything that you see on the screen in an iOS application.

In UIView, tasks such as rendering, layout and animation are all managed by a Core Animation class called CALayer. The only major feature of UIView that isn’t handled by CALayer is user interaction.

There are four hierarchies, each performing a different role:

yannickl

import Foundation
import UIKit

extension UIColor {
    convenience init(hexString:String) {
        let hexString:NSString = hexString.stringByTrimmingCharactersInSet(NSCharacterSet.whitespaceAndNewlineCharacterSet())
        let scanner            = NSScanner(string: hexString)
        
        if (hexString.hasPrefix("#")) {
            scanner.scanLocation = 1