tsiege

ANNOUNCEMENT

I have moved this over to the Tech Interview Cheat Sheet Repo and has been expanded and even has code challenges you can run and practice against!






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iamjason

/**
Usage:

let originalImage = UIImage(named: "cat")
let tintedImage = originalImage.tintWithColor(UIColor(red: 0.9, green: 0.7, blue: 0.4, alpha: 1.0))

*/
extension UIImage {
  
  func tintWithColor(color:UIColor)->UIImage {

JadenGeller

// Numerical matrix examples

let x: Matrix = [[10, 9, 8], [3, 2, 1]]
let y: Matrix = [[1, 2, 3], [4, 5, 6]]
let z: Matrix = [[1, 2], [3, 4], [5, 6]]

x + y              // [[11, 11, 11], [7, 7, 7]]
x * y              // [[10, 18, 24], [12, 10, 6]]
2 * x              // [[20, 18, 16], [6, 4, 2]]
y ** z             // [[22, 28], [49, 64]]

uupaa

Image source

https://gyazo.com/eb5c5741b6a9a16c692170a41a49c858.png

Try resize it!

• ![](https://gyazo.com/eb5c5741b6a9a16c692170a41a49c858.png | width=100)

kunikullaya

import Foundation

extension Date {

    func toString(format: String = "yyyy-MM-dd") -> String {
        let formatter = DateFormatter()
        formatter.dateStyle = .short
        formatter.dateFormat = format
        return formatter.string(from: self)
    }

jkereako

import UIKit
import WebKit

final class ReCAPTCHAViewController: UIViewController {
    private var webView: WKWebView!
    private let viewModel: ReCAPTCHAViewModel

    init(viewModel: ReCAPTCHAViewModel) {
        self.viewModel = viewModel

Catherine-K-George

import AWSS3

class AWSS3Uploader {
    
    /// Creates a upload request for uploading the specified file to a presigned remote URL
    ///
    /// - Parameters:
    ///     - fileURL: The URL of the file to upload.
    ///     - remoteURL: The presigned URL
    ///     - completion: The completion handler to call when the upload request is complete.