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func scrollViewDidScroll(_ scrollView: UIScrollView) {
        
        // Move ContainerView based on pagination from custom pagingScrollView
        if scrollView == pagingScrollView {
            
            // Calculate offset
            let offset = (self.view.frame.size.height - bottomPeekMargin) - scrollView.contentOffset.y

            // Overlay value (interpolates between 0.0 and 1.0 for end value)
            // Note to self: contentOffset divided by endValue (where you end the animation)

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// Instantiate
  self.mapViewController = self.storyboard?.instantiateViewController(withIdentifier: "MapViewController") as? MapViewController

    if let mapViewController = self.mapViewController {

        // Add to Container View
        self.mapViewContainerView.addSubview(mapViewController.view)
        self.addChildViewController(mapViewController)
        mapViewController.didMove(toParentViewController: self)
  }

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func add(asChildViewController viewController: UIViewController) {
        
        // Add Child View Controller
        self.addChildViewController(viewController)
        
        // Add Child View as Subview
        self.drawerContainerView.addSubview(viewController.view)
//        self.view.addSubview(viewController.view)
        
        // Configure Child View

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@IBDesignable class UITextViewFixed: UITextView {
    override func layoutSubviews() {
        super.layoutSubviews()
        setup()
    }
    func setup() {
        textContainerInset = UIEdgeInsets.zero
        textContainer.lineFragmentPadding = 0
    }
}

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extension Int {
    static func random(range: Range<Int>) -> Int {
        var offset = 0
        
        if range.lowerBound < 0 {
            offset = abs(range.lowerBound)
        }
        
        let mini = UInt32(range.lowerBound + offset)
        let maxi = UInt32(range.upperBound + offset)

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/*
*   Custom Ordering Field: Descending
*   - Trust me, this is the simplest way to do this with Firebase. 🤘
*/
imageObj["order"] = -image.uploadedAt.timeIntervalSince1970


/* */
FirebaseDatabaseReference.photos

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//
//  OneLineForEachSectionLayout.swift
//
//  Created by Philipp Kinschel on 28/11/2016.
//
//
//
// very basic solution to layout one section in one line without linebreaks
// TODO: find name for the class
//

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/// Global extension to remove all padding from all UITextView's.
extension UITextView {
    open override func setNeedsDisplay() {
        super.setNeedsDisplay()
        
        textContainerInset = UIEdgeInsets.zero
        textContainer.lineFragmentPadding = 0
    }
}

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// Database Reference
var ref: DatabaseReference!
var handle: UInt!
var updateHandler: UInt!

// Local store
var wishes = [Wish]() 

override func viewWillAppear(_ animated: Bool) {
  super.viewWillAppear(animated)

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import UIKit

@IBDesignable
class KerningLabel: UILabel {

    @IBInspectable var kerning: CGFloat = 0.0 {
        didSet {
            if attributedText?.length == nil { return }

            let attrStr = NSMutableAttributedString(attributedString: attributedText!)