tcldr

//
//  TimingFunction.swift
//
//  Created by tcldr on 04/11/2018.
//  https://github.com/tcldr
//  Copyright © 2018 tcldr.
//
//  Permission is hereby granted, free of charge,
//  to any person obtaining a copy of this software and
//  associated documentation files (the "Software"), to

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

damienlaughton

//
//  UIAccessorizedTextField.swift
//  AccessorizedTextField
//
//  Created by Damien Laughton on 28/03/2018.
//  2018 Mobilology Limited. No rights reserved.
//

import Foundation
import UIKit

JohnSundell

#!/bin/bash

ITERATION=1
EXTENSION="mp4"
FILENAME="$HOME/Desktop/Simulator Recording.$EXTENSION"

while [ -e "$FILENAME" ]
do
    ITERATION=$((ITERATION+1))
    FILENAME="$HOME/Desktop/Simulator Recording $ITERATION.$EXTENSION"

lattner

Swift Concurrency Manifesto

Author: Chris Lattner

Chinese Translation by Jason Yu

Contents

• Introduction
• Overall Vision

norsez

extension UIImage {
func image(withRotation radians: CGFloat) -> UIImage {
        let cgImage = self.cgImage!
        let LARGEST_SIZE = CGFloat(max(self.size.width, self.size.height))
        let context = CGContext.init(data: nil, width:Int(LARGEST_SIZE), height:Int(LARGEST_SIZE), bitsPerComponent: cgImage.bitsPerComponent, bytesPerRow: 0, space: cgImage.colorSpace!, bitmapInfo: cgImage.bitmapInfo.rawValue)!
        
        var drawRect = CGRect.zero
        drawRect.size = self.size
        let drawOrigin = CGPoint(x: (LARGEST_SIZE - self.size.width) * 0.5,y: (LARGEST_SIZE - self.size.height) * 0.5)

brennanMKE

import UIKit

enum DesignableButtonStyle: Int {
    case Regular = 0
    case Light
    case Dark
    case Fancy
    case Alert
}

IanKeen

enum SizeMatching {
    case Width, Height, Both, None
}

class IKScrollView: UIScrollView {
    //MARK: - Outlets
    @IBOutlet private var contentView: UIView?
    
    //MARK: - Properties
    @IBInspectable var sizeMatching = SizeMatching.Width