MylesCaley

import UIKit

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
  
  var isFullScreen = false
  
  func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
    // create notifications from wherever to signal fullscreen

MylesCaley

extension UITextView {

  func sizeThatWillFitAllText()->CGFloat {
    return self.sizeThatFits((self.frame.size)).height
  }
}

self.textViewHeightConstraintOutlet.constant = desiredTextViewHeight < CGFloat(75) ? desiredTextViewHeight : CGFloat(75)
      
      let textViewWantsHeightObservable = self.textViewHeightConstraintOutlet

MylesCaley

// instead of creating and destroying constraints all the time we can just
// add multiple constraints on the same object and then change the priority
// and indicate which one is active
if feedItem!.prototypeUpdate?.media.count <= 1 {
  mediaViewWidthConstraintLarge.priority = 995
  mediaViewWidthContraint.priority = 999
  mediaViewWidthConstraintLarge.isActive = true
  mediaViewWidthContraint.isActive = false
} else {
  mediaViewWidthConstraintLarge.priority = 999

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extension UIView {

class func loadFromNibNamed(nibNamed: String, bundle : Bundle? = nil) -> UIView? {
    return UINib(
      nibName: nibNamed,
      bundle: bundle
      ).instantiate(withOwner: nil, options: nil)[0] as? UIView
  }
  
}

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//section model file

import RxDataSources

enum CommentTableSectionModel {
  case section(comment: Comment, items: [CommentTableSectionModelItem])
}

extension CommentTableSectionModel: SectionModelType {

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// MAKE SURE YOU HAVE TOP TO BOTTOM CONSTRAINTS SET ON ALL OF THE OBJECTS IN THE HEADER VIEW!!!

// better as an extension
func sizeHeaderToFit() {
    
    if let tableViewHeader = self.tableHeaderView {
      let headerView = tableViewHeader
      
      headerView.setNeedsLayout()
      headerView.layoutIfNeeded()

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{ [weak self] (_) in
  guard let _ = self else { return }
  self!.
}

MylesCaley

Fixes for animation tutorial

MylesCaley

let index = updates.index(where: {$0.id == self.prototypeUpdate?.id})

MylesCaley

// there are cases where you just need to update the display and not the data
// for example if you change the constants on a constraint

self!.tableView?.beginUpdates()
self!.tableView?.endUpdates()