jasdev’s gists

jasdev / ScrimLoader.swift

Last active April 19, 2024 03:47

Rough sketch of Arc’s scrim loading view.

	import SwiftUI

	/**

	### Exercises for the viewer

	- Phase interrupt handling.
	- Use Swift concurrency.
	- Color scheme awareness.
	- Rework animations to be more spring-like à la what shipped in `0.90.0`.

jasdev / srt_parser.swift

Last active November 15, 2022 20:50

Sketch of an SRT file parser.

	import Parsing
	import Foundation

	// [SubRip file format spec.](https://en.wikipedia.org/wiki/SubRip#File_format)
	let sampleSRTString =
	"""
	1
	00:00:00,540 --> 00:00:00,960
	Yo-yo

jasdev / geometryPreference.swift

Last active April 24, 2020 19:57

objc.io’s geometryPreference modifier and Preference view for propagating up proxied geometries and reading them.

	import SwiftUI

	struct Preference<PreferenceKey: SwiftUI.PreferenceKey, Content: View>: View
	where PreferenceKey.Value: Equatable {

	private let content: (PreferenceKey.Value) -> Content
	@State private var value: PreferenceKey.Value = PreferenceKey.defaultValue

	init(
	_ key: PreferenceKey.Type,

jasdev / final_cancellation_handling.swift

Last active April 20, 2020 16:00

Final `ReplaySubject` and `.Subscription` cancellation handling.

	final class ReplaySubject<Output, Failure: Error>: Subject {
	typealias Output = Output
	typealias Failure = Failure

	private let bufferSize: Int

	private var completion: Subscribers.Completion<Failure>?

	private var isActive: Bool { /* … */ }

jasdev / postfix_type_erasure.swift

Last active March 25, 2020 21:22

Postfix type erasure in Combine.

	import Combine

	postfix operator ^
	postfix func ^ <Publisher: Combine.Publisher>(_ publisher: Publisher)
	-> AnyPublisher<Publisher.Output, Publisher.Failure> {
	publisher.eraseToAnyPublisher()
	}

jasdev / FoundationErrorWrapper.swift

Created July 14, 2016 02:05

An attempt at a protocol that can imply the present of specific cases

	import Foundation

	public protocol FoundationErrorWrapper: ErrorProtocol {
	static func wrappingError(_ error: NSError) -> Self
	}

	enum SomeError: ErrorProtocol, FoundationErrorWrapper {
	case a
	case wrappingError(NSError)
	}

jasdev / CharacterSet+StringLiteralConvertible.swift

Created June 30, 2016 01:33

CharacterSet StringLiteralConvertible

	extension CharacterSet: StringLiteralConvertible, ExtendedGraphemeClusterLiteralConvertible {
	public init(stringLiteral value: String) {
	self.init(charactersIn: value)
	}

	public init(extendedGraphemeClusterLiteral value: ExtendedGraphemeClusterType) {
	self.init(charactersIn: value)
	}

	public init(unicodeScalarLiteral value: UnicodeScalarType) {

jasdev / AppDefault.swift

Last active July 19, 2024 15:14

Swift nonmutating Example

	import Foundation

	enum AppDefault {
	case APIServer, runMode, homeDirectory, reactHost

	var stringValue: String? {
	get {
	return NSUserDefaults.standardUserDefaults().stringForKey(String(self))
	}

jasdev / SampleViewController.swift

Last active March 23, 2016 00:33

	final class SampleViewController: UIViewController {

	override func viewDidLoad() {
	super.viewDidLoad()

	let button = UIButton(type: .System)

	// ...

	button.addTarget(self, action: #selector(SampleViewController.buttonTapped(_:)), forControlEvents: .TouchUpInside)

jasdev / SampleViewController.swift

Created March 23, 2016 00:24

	final class SampleViewController: UIViewController {

	override func viewDidLoad() {
	super.viewDidLoad()

	let button = UIButton(type: .System)

	// ...

	button.addTarget(self, action: #selector(SampleViewController.buttonTapped(_:)), forControlEvents: .TouchUpInside)

Jasdev Singh jasdev