title: Compile error being caused when using NSLayoutConstraint
body: <p>My code is not compiling when I am using NSLayoutConstraint. I am trying to do everything with code and not using storyboard. I dont know if this is happening because I am missing something but it is nothining I can think of right now of why this is not working. The error is occurring in the viewDidLoad function at the <code>judo = line</code>.</p>
  
  <p>I am getting the error:</p>
  
  <blockquote>
    <p>Cannot assign value of type '[()]' to type '[NSLayout</p>
  </blockquote>
  
  <p>for the <code>judo = []</code> part. </p>
  
  <pre><code>import UIKit
  
  class ViewController: UIViewController {
      var Judo1 = [NSLayoutConstraint]()
      let FIRE = UIImageView()
  
      override func viewDidLoad() {
          super.viewDidLoad()
  
          view.addSubview(FIRE)
          FIRE.translatesAutoresizingMaskIntoConstraints = false
          let leadingc2 = FIRE.topAnchor.constraint(equalTo: view.topAnchor, constant: 0).isActive = true
          let trailingC2 =  FIRE.bottomAnchor.constraint(equalTo: view.bottomAnchor, constant: 0).isActive = true
          let topc2 =
              FIRE.leadingAnchor.constraint(equalTo: view.leadingAnchor, constant: 0).isActive = true
          let bottomc2 =   FIRE.trailingAnchor.constraint(equalTo: view.trailingAnchor, constant: 0).isActive = true
  
          Judo1 = [leadingc2,trailingC2,topc2,bottomc2]
  
          NSLayoutConstraint.activate(Judo1)
      }
  }
  </code></pre>