marcrasi

Compile Time Constant Expressions for Swift

• Proposal: SE-NNNN
• Authors: Marc Rasi, Chris Lattner
• Review Manager: TBD
• Status: Awaiting implementation

Swift-evolution thread: https://forums.swift.org/t/pitch-compile-time-constant-expressions-for-swift/12879

Introduction

sanllier

@objc func _needsDoubleUpdateConstraintsPass() -> Bool {
    return true
} 
 
override var intrinsicContentSize: CGSize {
    return attributedText?.size(forWidth: (engineBounds ?? bounds).width) ?? .zero
}

var engineBounds: CGRect? {
    let objcSelector = "_nsis_compatibleBoundsInEngine:")

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.

nevan

https://developer.apple.com/videos/wwdc/2015/?id=101	101 Keynote
https://developer.apple.com/videos/wwdc/2015/?id=102	102 Platforms State of the Union
https://developer.apple.com/videos/wwdc/2015/?id=103	103 Apple Design Awards
https://developer.apple.com/videos/wwdc/2015/?id=104	104 What's New in Xcode
https://developer.apple.com/videos/wwdc/2015/?id=105	105 Introducing WatchKit for watchOS 2
https://developer.apple.com/videos/wwdc/2015/?id=106	106 What's New in Swift
https://developer.apple.com/videos/wwdc/2015/?id=107	107 What's New in Cocoa Touch
https://developer.apple.com/videos/wwdc/2015/?id=108	108 Building Watch Apps
https://developer.apple.com/videos/wwdc/2015/?id=112	112 Think Audacious
https://developer.apple.com/videos/wwdc/2015/?id=201	201 iOS Accessibility