lesleh

    // Example usage:
    //
    // int[] numbers = {1, 2, 3, 4, 5, 6, 7};
    // int[][] chunks = chunkArray(numbers, 3);
    //
    // chunks now contains [
    //                         [1, 2, 3],
    //                         [4, 5, 6],
    //                         [7]
    //                     ]

UIColor+Helper.swift

import UIKit

extension UIColor {
    convenience init(hex: String, alpha: CGFloat = 1) {
        assert(hex[hex.startIndex] == "#", "Expected hex string of format #RRGGBB")
        
        let scanner = NSScanner(string: hex)
        scanner.scanLocation = 1  // skip #
        
        var rgb: UInt32 = 0