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import SwiftUI | |
struct ContentView: View { | |
@State private var scale: CGFloat = 1 | |
@State private var angle = Angle(radians: 0) | |
@State private var color = UIColor.blue | |
var body: some View { | |
Image(systemName: "heart.fill") |
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struct Paragraph { | |
var words: String | |
} | |
struct Chapter { | |
var title: String | |
var content: [Paragraph] | |
} |
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extension UIImage { | |
enum HEICError: Error { | |
case heicNotSupported | |
case cgImageMissing | |
case couldNotFinalize | |
} | |
static var isHEICSupported: Bool = { | |
let data = NSMutableData() |
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private static let toSuper: [Character: String] = ["0": "\u{2070}", | |
"1": "\u{00B9}", | |
"2": "\u{00B2}", | |
"3": "\u{00B3}", | |
"4": "\u{2074}", | |
"5": "\u{2075}", | |
"6": "\u{2076}", | |
"7": "\u{2077}", | |
"8": "\u{2078}", | |
"9": "\u{2079}", |
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import Foundation | |
extension String.StringInterpolation { | |
private static let toSuper: [Character: String] = ["0": "\u{2070}", | |
"1": "\u{00B9}", | |
"2": "\u{00B2}", | |
"3": "\u{00B3}", | |
"4": "\u{2074}", | |
"5": "\u{2075}", |
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struct Dice: Codable { | |
var range: Range<Int> | |
init<R: RangeExpression>(range expr: R) where R.Bound == Int { | |
range = expr.relative(to: Range<Int>(Int.min...Int.max-1)) | |
} | |
func roll() -> Int { | |
return Int.random(in: range) |
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enum Result<Success, Failure: Error> { | |
case success(Success) | |
case failure(Failure) | |
func get() throws -> Success { | |
switch self { | |
case .success(let success): | |
return success | |
case .failure(let failure): | |
throw failure |
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enum Coin { | |
case heads | |
case tails | |
var isHeads: Bool { | |
switch self { | |
case .heads: | |
return true | |
case .tails: | |
return false |
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func compute(_ a: inout Int, _ b: inout Int) { | |
b = 100 | |
a = 10 | |
} | |
var x = 0 | |
var y = 0 | |
compute(&x, &y) |
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enum Direction { | |
case north, east, south, west | |
var left: Direction { | |
switch self { | |
case .north: return .west | |
case .west: return .south | |
case .south: return .east | |
case .east: return .north | |
} |