lattner

Async/Await for Swift

• Proposal: SE-XXXX
• Authors: Chris Lattner, Joe Groff

Introduction

Modern Cocoa development involves a lot of asynchronous programming using closures and completion handlers, but these APIs are hard to use. This gets particularly problematic when many asynchronous operations are used, error handling is required, or control flow between asynchronous calls gets complicated. This proposal describes a language extension to make this a lot more natural and less error prone.

This paper introduces a first class Coroutine model to Swift. Functions can opt into to being async, allowing the programmer to compose complex logic involving asynchronous operations, leaving the compiler in charge of producing the necessary closures and state machines to implement that logic.

mcxiaoke

#!/bin/bash

# Global build settings
export SDKPATH=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk
export SIMSDKPATH=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk
export MIN_IOS_VERSION=8.0
export HOST=arm-apple-darwin
export LDFLAGS_NATIVE="-isysroot $SDKPATH"
export LDFLAGS_SIMULATOR="-isysroot $SIMSDKPATH"
export TASN1_CFLAGS="-Ilibtasn1/include"

lattner

Swift Concurrency Manifesto

Author: Chris Lattner

Chinese Translation by Jason Yu

Contents

• Introduction
• Overall Vision

niftylettuce

How to Enable Wi-Fi on MacBook, Mac Mini, MacBook Air for Ubuntu/Linux OS

By default older Mac computer models have driver issues with the Broadcom Wi-Fi chip. Most instructions online (such as this one from the official Ubuntu docs @ https://help.ubuntu.com/community/Macmini5-1/Precise) suggest to use sudo apt-get and install these packages from the PPA.

BUT you don't have Internet so you can't use apt-get! Instead you can use a different computer to download the packages, then transfer them over.

In the instructions below, you will need to replace sid in the download URL's with the proper version of Debian your version of Ubuntu/Linux is using. To find which version you should use, you can view the chart at https://askubuntu.com/questions/445487/what-debian-version-are-the-different-ubuntu-versions-based-on#445496. If you're using jessie for example, then replace all sid with jessie in the links below.

1. Download b43-fwcutter @ (*

dannygsmith

# Homebrew and Cask

Install the XCode command line tools by running `xcode-select --install` in the terminal.

Install Homebrew by following the instructions on the [homebrew website](http://brew.sh).

Install Cask by following the instructions on the [cask website](https://caskroom.github.io).


# Applications

milseman

State of String: ABI, Performance, Ergonomics, and You!

Hello, I’ve been working on implementing, optimizing, and improving String in preparation for ABI stability, and I thought I’d share the current status of String in Swift 5 and some potential directions to go. This is the product of conversations with open source contributors and my colleagues on the Swift standard library team at Apple.

The primary area of focus is stabilizing String’s ABI, but we’d be remiss if we couldn’t also fit in performance and ergonomic improvements. String’s ergonomics in particular is one area where we think the status quo is woefully inadequate, and over half of this email is devoted to that topic. At the end, there’s a section about a community initiative that we hope can help users of String as well as guide future development.

(Note: I’m sending this to swift-dev because much of the contents revolve around implementation concerns. I’ll also cross-reference on swift-evolution and swift-users. See also the [StringManife

sparrc

#!/usr/bin/env bash

# Installs ffmpeg from source (HEAD) with libaom and libx265, as well as a few
# other common libraries
# binary will be at ~/bin/ffmpeg

sudo apt update && sudo apt upgrade -y

mkdir -p ~/ffmpeg_sources ~/bin
export PATH="$HOME/bin:$PATH"

harlanhaskins

import Foundation

/// `StringScanner` is a fast scanner for Strings and String-like objects.
/// It's used to extract structured bits from unstructured strings, while
/// avoiding making extra copies of string bits until absolutely necessary.
/// You can build Scanners over Substrings, allowing you to scan
/// parts of strings and use smaller, more specialized scanners to extract bits
/// of that String without needing to reuse another scanner.
public struct StringScanner<Input: StringProtocol> {
  let input: Input

steve228uk

import UIKit
import CoreServices
import ImageIO

class Writer {

    let output = NSTemporaryDirectory().appending("output.heic")
    lazy var outputUrl: CFURL = {
        return URL(fileURLWithPath: output) as CFURL
    }()

richard-flosi

<html>

<head>
  <script>
    customElements.define("star-wars-planets", class extends HTMLElement {
      constructor() {
        super();
        this.attachShadow({ mode: "open" });
      }
      static get observedAttributes() { return ["loading", "planets"]; }