| // | |
| // SimpleScrollingStack.swift | |
| // A super-simple demo of a scrolling UIStackView in iOS 9 | |
| // | |
| // Created by Paul Hudson on 10/06/2015. | |
| // Learn Swift at www.hackingwithswift.com | |
| // @twostraws | |
| // | |
| import UIKit |
| // | |
| // Copyright (c) 2015 Nexar Inc. - All Rights Reserved. Proprietary and confidential. | |
| // | |
| // Unauthorized copying of this file, via any medium is strictly prohibited. | |
| import Foundation | |
| import Mixpanel | |
| public class Tweaks : NSObject, MPTweakObserver { | |
Note This is a little out of date. Rust has made some progress on some points, however many points still apply.
Swift shares Rust's enthusiasm for zero-cost abstractions, but also emphasizes progressive disclosure. Progressive disclosure requires that language features should be added in a way that doesn't complicate the rest of the language. This means that Swift aims to be simple for simple tasks, and only as complex as needed for complex tasks.
| ### Points and display type | |
| PPI is points per inch below, not pixels per inch. Not all models are listed, just the first model with a new display size. Diamond, RGB Stripe and Pentile RGB refer to the subpixel patterns. | |
| iPhone 1 = 320×480 at 163PPI sRGB IPS LCD RGB Stripe | |
| iPhone 4 = 320×480 at 163PPI sRGB IPS LCD RGB Stripe | |
| iPhone 5 = 320×568 at 163PPI sRGB IPS LCD RGB Stripe | |
| iPhone 6 = 375×667 at 163PPI sRGB IPS LCD RGB Stripe | |
| iPhone 6 Plus = 414×736 at 153.5PPI sRGB IPS LCD RGB Stripe | |
| iPhone 7 = 375×667 at 163PPI P3 IPS LCD RGB Stripe |
| /// Wrapper around a lazily resolved using checked continuation. | |
| /// | |
| /// Usage: | |
| /// | |
| /// ``` | |
| /// let promiseA = Promised<String>() | |
| /// async let a1 = promiseA.value | |
| /// promiseA.resolve("AAA") | |
| /// let a2 = await promiseA.value | |
| /// print(await a1, a2) |
| // A simple serial queue. Every operation sent through the queue will be executed | |
| // in first-in first-out order. Every operation will complete its execution fully, | |
| // even if it includes suspension points, prior to the next operation commencing. | |
| // | |
| // TIP: If calling from a global actor like @MainActor annotate your closure to | |
| // get better ergonomics: `queue.send { @MainActor in /* ... */ }` | |
| public final class AsyncSerialQueue: Sendable { | |
