Francis Chong siuying

At WWDC 2019 Apple released some videos directly online, with no corresponding live session. This is a list of those videos with links to the video pages.

Some sessions were presented during WWDC but then split into multiple videos when posted online. This list includes the online versions, since they don't appear in the WWDC schedule. For example WWDC included session 711, "Introducing Combine and Advances in Foundation". This was split into two online videos-- 722, "Introducing Combine", and 723, "Advances in Foundation". Both 722 and 723 are included here.

244 Visual Design and Accessibility https://developer.apple.com/videos/play/wwdc2019/244
245 Introducing the Indoor Maps Program https://developer.apple.com/videos/play/wwdc2019/245
246 Window Management in Your Multitasking App https://developer.apple.com/videos/play/wwdc2019/246
247 What’s New in ClassKit https://developer.apple.com/videos/play/wwdc2019/247
248 Creating an Accessible Reading Experience https://developer.apple.com/

You might want to read this to get an introduction to armel vs armhf.

If the below is too much, you can try Ubuntu-ARMv7-Qemu but note it contains non-free blobs.

Running ARM programs under linux (without starting QEMU VM!)

First, cross-compile user programs with GCC-ARM toolchain. Then install qemu-arm-static so that you can run ARM executables directly on linux

If there's no qemu-arm-static in the package list, install qemu-user-static instead

Dependency Injection in Functional Programming

There exist several DI frameworks / libraries in the Scala ecosystem. But the more functional code you write the more you'll realize there's no need to use any of them.

A few of the most claimed benefits are the following:

Dependency Injection.
Life cycle management.
Dependency graph rewriting.

Swift Concurrency Manifesto

Author: Chris Lattner

Chinese Translation by Jason Yu

	// Don't forget to prefix your category!

	#import <UIKit/UIKit.h>

	NS_ASSUME_NONNULL_BEGIN

	@interface UIWindow (PSPDFAdditions)

	#if TARGET_OS_UIKITFORMAC

	#! /usr/bin/env ruby

	# NOTE: Requires Ruby 2.1 or greater.

	# This script can be used to parse and dump the information from
	# the 'html/contact_info.htm' file in a Facebook user data ZIP download.
	#
	# It prints all cell phone call + SMS message + MMS records, plus a summary of each.
	#
	# It also dumps all of the records into CSV files inside a 'CSV' folder, that is created

	#import <WebKit/WebKit.h>

	#include "ui.h"
	#include "ui_darwin.h"

	#define uiWebViewSignature 0x57656276 // "Webv"
	typedef struct uiWebView uiWebView;
	#define uiWebView(this) ((uiWebView *) (this))

	struct uiWebView {

	'''
	Extract a known face from a video.

	Uses a combination of a deep learning CNN model to batch detect faces
	in video frames, or a sequence of images, in GPU with CUDA and HoG to compare
	the detected faces with a computed reference set of face encodings.
	'''
	from os import path, listdir
	from typing import NamedTuple

	// This is a really simple drop-in replacement for String.UnicodeScalarView
	// As of Swift 3.2, String.UnicodeScalarView no longer supports slice operations, and
	// String.UnicodeScalarView.Subsequence is ~5x slower
	//
	// Only a small subset of methods are implemented, specifically the ones useful for
	// implementing a parser or lexer that consumes a string by repeatedly calling popFirst()
	//
	// I've benchmarked popFirst() as ~7x faster than String.UnicodeScalarView.Subsequence in Swift 3.2 and 4.0
	// The performance is close to that of String.UnicodeScalarView in Swift 3.1, but may be slightly worse in some use cases

	#import <Foundation/Foundation.h>

	@interface KKSimpleAirPlay2Player : NSObject

	- (id)initWithURL:(NSURL *)inURL;
	- (void)play;
	- (void)pause;
	@property (readonly, getter=isStopped) BOOL stopped;

	@end

Francis Chong siuying

Running ARM programs under linux (without starting QEMU VM!)

Dependency Injection in Functional Programming

Swift Concurrency Manifesto

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