waterskier2007

//MARK: - Playground code

//: A UIKit based Playground for presenting user interface
  
import UIKit
import PlaygroundSupport

class MyViewController : UIViewController {
    override func loadView() {
        let view = PenroseView(frame: CGRect(x: 0, y: 0, width: 1000, height: 800))

gk-plastics

extension UILabel {
    func setText(_ text: String, prependedBySymbolNameed symbolSystemName: String, font: UIFont? = nil) {
        if #available(iOS 13.0, *) {
            if let font = font { self.font = font }
            let symbolConfiguration = UIImage.SymbolConfiguration(font: self.font)
            let symbolImage = UIImage(systemName: symbolSystemName, withConfiguration: symbolConfiguration)?.withRenderingMode(.alwaysTemplate)
            let symbolTextAttachment = NSTextAttachment()
            symbolTextAttachment.image = symbolImage
            let attributedText = NSMutableAttributedString()
            attributedText.append(NSAttributedString(attachment: symbolTextAttachment))

hugsy

abandoned
able
absolute
adorable
adventurous
academic
acceptable
acclaimed
accomplished
accurate

iandundas

// Returns a random Emoji 🌿
extension String{
    func randomEmoji()->String{
        let range = 0x1F601...0x1F64F
        let ascii = range.startIndex + Int(arc4random_uniform(UInt32(range.count)))
        let emoji = String(UnicodeScalar(ascii))
        return emoji
    }
}

jkosoy

// port of http://stackoverflow.com/a/17948778/3071224

import UIKit
import Foundation

extension CGSize {
    static func aspectFit(aspectRatio : CGSize, var boundingSize: CGSize) -> CGSize {
        let mW = boundingSize.width / aspectRatio.width;
        let mH = boundingSize.height / aspectRatio.height;

proxpero

//: Permutations
//  based on https://www.objc.io/blog/2014/12/08/functional-snippet-10-permutations/
//  but updated for Swift 2.0 (Xcode 7.0)

extension Array {
    func decompose() -> (Generator.Element, [Generator.Element])? {
        guard let x = first else { return nil }
        return (x, Array(self[1..<count]))
    }
}

adunsmoor

import UIKit

// Returns a list of points on the convex hull in counter-clockwise order.
// Note: the last point in the returned list is the same as the first one.
//
// https://en.wikibooks.org/wiki/Algorithm_Implementation/Geometry/Convex_hull/Monotone_chain
//
func closedConvexHull(points_ : [CGPoint]) -> [CGPoint] {
    
    // 2D cross product of OA and OB vectors, i.e. z-component of their 3D cross product.