trilliwon

// Swift4
let image = UIImage(named: "sample")
let data = image?.pngData()
let data = image?.jpegData(compressionQuality: 0.9)
let uiImage: UIImage = UIImage(data: imageData)

// deprecated
// var imageData: Data = UIImagePNGRepresentation(image)

MrJackdaw

// This syntax reflects changes made to the Swift language as of Aug. '16

extension UIView {
    
    // Example use: myView.addBorder(toSide: .Left, withColor: UIColor.redColor().CGColor, andThickness: 1.0)
    
    enum ViewSide {
        case Left, Right, Top, Bottom
    }
    

soggybag

// Draw a sine curve with a fill

let centerY = frame.height / 2  // find the vertical center
let steps = 200                 // Divide the curve into steps
let stepX = frame.width / CGFloat(steps) // find the horizontal step distance

// Make a path
let path = UIBezierPath()
// Start in the lower left corner
path.moveToPoint(CGPoint(x: 0, y: frame.height))

FreyaHolmer

using UnityEngine;
using System.Linq;

[RequireComponent(typeof(Rigidbody))]
public class RigidbodyMassCalculator : MonoBehaviour {

	public float density = 1f;
	public bool recalculateOnAwake = true;
	
	Rigidbody rb;

Rathgore

import Foundation

let SEED: UInt16 = 0xFFFF

let crcCCITTLookupTable: [UInt16] = [
    0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50A5, 0x60C6, 0x70E7, 0x8108,
    0x9129, 0xA14A, 0xB16B, 0xC18C, 0xD1AD, 0xE1CE, 0xF1EF, 0x1231, 0x0210,
    0x3273, 0x2252, 0x52B5, 0x4294, 0x72F7, 0x62D6, 0x9339, 0x8318, 0xB37B,
    0xA35A, 0xD3BD, 0xC39C, 0xF3FF, 0xE3DE, 0x2462, 0x3443, 0x0420, 0x1401,
    0x64E6, 0x74C7, 0x44A4, 0x5485, 0xA56A, 0xB54B, 0x8528, 0x9509, 0xE5EE,

nubbel

func encode<T>(var value: T) -> NSData {
    return withUnsafePointer(&value) { p in
        NSData(bytes: p, length: sizeofValue(value))
    }
}

func decode<T>(data: NSData) -> T {
    let pointer = UnsafeMutablePointer<T>.alloc(sizeof(T.Type))
    data.getBytes(pointer)