| // Source: https://www.hackingwithswift.com/plus/high-performance-apps/using-memoization-to-speed-up-slow-functions | |
| // Source: https://medium.com/@mvxlr/swift-memoize-walk-through-c5224a558194 | |
| typealias MemFn<Input, Output> = (Input) -> Output | |
| // work with any sort of input and output as long as the input is hashable | |
| // accept a function that takes Input and returns Output, and return a function with the same signature | |
| func memoize<Input: Hashable, Output>( | |
| _ work: @escaping MemFn<Input, Output> | |
| ) -> MemFn<Input, Output> { |
Twitter abuses all media file uploads, each type in its own way. If we want to upload a good looking animation loop from some low-color, high-detail generative art, we have to game their system's mechanisms.
don't upload a video file, they will re-encode it into absolute 💩
create a GIF, which they will auto-convert into a video file 😱
The frames of the GIF will be resized to an even-sized width using an extremely naive algorithm. Your GIF should be an even size (1000, 2000,
| import SwiftUI | |
| struct Dial: View { | |
| @Binding public var value: Double | |
| public var minValue: Double = 0 | |
| public var maxValue: Double = .greatestFiniteMagnitude | |
| public var divisor: Double = 1 | |
| public var stepping: Double = 1 | |
| @State private var dialAngle: Angle = .zero | |
| @State private var dialShadowAngle: Angle = .zero |
Following the tradition from last year, here's my complete list of all interesting features and updates I could find in Apple's OSes, SDKs and developer tools that were announced at this year's WWDC. This is based on the keynotes, the "What's New In ..." presentations and some others, Apple's release notes, and blog posts and tweets that I came across in the last few weeks.
If for some reason you haven't watched the talks yet, I really recommend watching at least the "State of the Union" and the "What's New In" intros for the platforms you're interested in. The unofficial WWDC Mac app is great way to download the videos and keep track of what you've already watched.
If you're interested, here are my WWDC 2015 notes (might be useful if you're planning to drop support for iOS 8 now and start using some iOS 9 APIs).
| extension NSTimer { | |
| /** | |
| Creates and schedules a one-time `NSTimer` instance. | |
| - Parameters: | |
| - delay: The delay before execution. | |
| - handler: A closure to execute after `delay`. | |
| - Returns: The newly-created `NSTimer` instance. | |
| */ |
