imjhk03

enum ScreenSize {
    static let width        = UIScreen.main.bounds.size.width
    static let height       = UIScreen.main.bounds.size.height
    static let maxLength    = max(ScreenSize.width, ScreenSize.height)
    static let minLength    = min(ScreenSize.width, ScreenSize.height)
}


enum DeviceTypes {
    static let idiom                    = UIDevice.current.userInterfaceIdiom

imjhk03

import UIKit

struct AnchoredConstraints {
    var top, leading, bottom, trailing, width, height: NSLayoutConstraint?
}

extension UIView {
    
    @discardableResult
    func anchor(top: NSLayoutYAxisAnchor?, leading: NSLayoutXAxisAnchor?, bottom: NSLayoutYAxisAnchor?, trailing: NSLayoutXAxisAnchor?, padding: UIEdgeInsets = .zero, size: CGSize = .zero) -> AnchoredConstraints {

imjhk03

import UIKit

extension UIView {
    func addSubviews(_ views: UIView...) {
        for view in views { addSubview(view) }
    }
}

imjhk03

extension String {
    
    var isValidEmail: Bool {
        let emailFormat = ""
        let emailPredicate = NSPredicate(format: "SELF MATCHES %@", emailFormat)
        return emailPredicate.evaluate(with: self)
    }
    
    var isValidPassword: Bool {
        //Regex restricts to 8 character minimum, 1 capital letter, 1 lowercase letter, 1 number

imjhk03

/*
 Filter
 */
let familyNames = ["Park", "Lee", "Jong", "Kim", "Choi"]
let longFamilyNames = familyNames.filter { $0.count > 3 }
print(longFamilyNames)
// ["Park", "Jong", "Choi"]


let familyNames = ["Park", "Lee", "Jong", "Kim", "Choi"]

imjhk03

import Foundation

extension String {
    func toDate(format: String) -> Date? {
        let formatter = DateFormatter()
        formatter.dateFormat = format
        return formatter.date(from: self)
    }
}

imjhk03

import UIKit

enum UIHelper {

    /// Convert Zeplin line height to iOS line spacing
   static func lineSpacing(from lineHeight: CGFloat, font: UIFont) -> CGFloat {
       let value = lineHeight - font.lineHeight
       return value
   }

imjhk03

func collectionView(_ collectionView: UICollectionView, willDisplaySupplementaryView view: UICollectionReusableView, forElementKind elementKind: String, at indexPath: IndexPath) {
    // works from iOS 12 and below
    view.layer.zPosition = 0
}

imjhk03

import UIKit

protocol Moveable {
    func move(to point: CGPoint)
}

extension Moveable {
    func move(to point: CGPoint = .zero) {
        move(to: point)
    }

imjhk03

import Foundation

enum Dough: String {
    case basic
    case cheeseCrust
}

enum Topping: String, CaseIterable {
    case pepperoni
    case sausage