Mattt mattt

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

Swift Concurrency Manifesto

Author: Chris Lattner

Chinese Translation by Jason Yu

Methods of Signing Git Commits on MacOS

Last updated March 13, 2024

This Gist explains how to sign commits using gpg in a step-by-step fashion. Previously, krypt.co was heavily mentioned, but I've only recently learned they were acquired by Akamai and no longer update their previous free products. Those mentions have been removed.

Additionally, 1Password now supports signing Git commits with SSH keys and makes it pretty easy-plus you can easily configure Git Tower to use it for both signing and ssh.

For using a GUI-based GIT tool such as Tower or Github Desktop, follow the steps here for signing your commits with GPG.

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.

Season's Greetings, NSHipsters!

As the year winds down, and we take a moment to reflect on our experiences over the past months, one thing is clear: 2014 has been an incredible year professionally for Apple developers. So much has happened in such a short timespan, and yet it's hard to remember our relationship to Objective-C before Swift, or what APIs could have captivated our imagination as much as iOS 8 or WatchKit.

It's an NSHipster tradition to ask you, dear readers, to send in your favorite tips and tricks from the past year for publication over the New Year's holiday. This year, with the deluge of new developments—both from Cupertino and the community at large—there should be no shortage of interesting tidbits to share.

Submit your favorite piece of Swift or Objective-C trivia, framework arcana, hidden Xcode feature, or anything else you think is cool, and you could have it featured in the year-end blowout article. Just comment on this gist below!

If you're wondering about what to post, look to

ASCIIwwdc Viewing Statistics

June 1, 2014 – September 15, 2014

Percentage of total visits for sessions among the top 100 pages on ASCIIwwdc.

Initial Takeaways

Vast majority of views for 2014 sessions, as might be expected
Top 6 most-watched session all involve view controllers & Interface Builder (accounting for 1/4 of total traffic)
"What's New in X" sessions are extremely popular

	// Swift Playgrounds Beta 1.0
	import AVFoundation
	import AVKit
	import Accelerate
	import Accounts
	import AudioToolbox
	import AudioUnit
	import CFNetwork
	import CoreAudio
	import CoreAudioKit

	# RELAX NG compact syntax cheat sheet

	# See also:
	# * tutorial <http://www.relaxng.org/compact-tutorial-20030326.html>
	# * spec <http://www.relaxng.org/compact-20021121.html>

	# Checking a XML file:
	#
	# jing -c schema.rnc file.xml
	#

	struct もじれつ: Printable {
	let description: String

	init(string: String) {
	var mutableString = NSMutableString(string: string) as CFMutableString
	if CFStringTransform(mutableString, nil, kCFStringTransformLatinHiragana, 0) == 1 {
	self.description = mutableString as NSString
	} else {
	self.description = string
	}