tonnylitao

import Foundation
import CoreData

struct RemoteUser: Decodable {
    var userId: Int
    var name: String
}

class User: NSManagedObject {
    @NSManaged public var userId: Int

tonnylitao

#!/bin/bash
set -e

# before re-install Mac system, keep in mind:
# 1. exporting key and certificate keychain
# 2. iPhone/iPad backup files
# 3. WeChat message backup file
# 4. ~/.ssh

# then change the following git config and run this script

tonnylitao

    let mapping = [\User.name:      nameField,
                   \User.email:     emailField,
                   \User.likeKiwi:  likeKiwiSwitcher,
                   \User.travel:    travelBtn,
                   \User.hiking:    hikingBtn,
                   \User.reading:   readingBtn]

    func update(_ keypath: PartialKeyPath<User>, _ value: Any) {
        model[keyPath: keypath] = value
        mapping[keypath].value = value   

tonnylitao

    model.name = "Tonny"
    nameField.text = "Tonny"
        
    model.email = "[email protected]"
    emailField.text = "[email protected]"
        
    model.likeKiwi = true
    likeKiwiSwitcher.isOn = true
        
    model.travel = false

tonnylitao

    let mapping = [1 : \User.name,
                   2 : \User.email,
                   3 : \User.likeKiwi,
                   4 : \User.travel,
                   5 : \User.hiking,
                   6 : \User.reading]

    func viewChanged(_ field: Field) {
        let path = mapping[sender.tag]
        model[keyPath: path] = field.value

tonnylitao

    @IBAction func nameChanged(_ sender: UITextField) {
        model.name = sender.text
    }
    
    @IBAction func emailChanged(_ sender: UITextField) {
        model.email = sender.text
    }
    
    @IBAction func switchChanged(_ sender: UISwitch) {
        model.likeKiwi = sender.isOn

tonnylitao

    @IBOutlet weak var nameField: UITextField!
    @IBOutlet weak var emailField: UITextField!
  
    @IBOutlet weak var likeKiwiSwitcher: UISwitch!

    @IBOutlet weak var travelBtn: UIButton!
    @IBOutlet weak var hikingBtn: UIButton!
    @IBOutlet weak var readingBtn: UIButton!

tonnylitao

extension DataBinding {  

  public func update<Value>(_ keyPath: WritableKeyPath<M, Value>, _ value: Value) {
    model[keyPath: keyPath] = value

    _keyPathViews[keyPath]?.wrappedView?.setValue(value)
  }
}

tonnylitao

let mapping = [
  \User.name: nameField,
  \User.email: gmailField,
  \User.address: addressField,

  \User.travel: travelBtn,
  \User.hiking: hikingBtn,
  \User.reading: readingBtn,
]

tonnylitao

struct User {
    var name, email: String?
    
    var likeKiwi = false
    
    var travel = false
    var hiking = false
    var reading = false
}