data flow to view mode with keypath

ViewController_update.swift

    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   
    }
    
    ...
    
    update(\User.name, "Tonny")
    update(\User.email, "[email protected]")
    update(\User.likeKiwi, true)
    update(\User.travel, false)
    update(\User.hiking, true)
    update(\User.reading, true)