Can A Mix Of Structs And Classes Be Used For A Document App's Data Model?

[12GreenTrees]

I guess if the TextField only updated the underlying model every 5 seconds, instead of constantly, performance wouldn't be that bad.

Do TextFields do something like this by default?

[12GreenTrees]

"...the text field updates this value continuously as the user types or otherwise edits the text in the field." [

TextField | Apple Developer Documentation

](TextField | Apple Developer Documentation)

[12GreenTrees]

Why I thought classes wouldn't be an option was addressed in this thread.

@antdon

I think you might be getting confused with some of the terminology and that can make googling things difficult.

@12GreenTrees

If the user hits the "Add Row" button, and that just makes a new instance of a class cellRow, then it will display the same stuff as all the other row instances.

Different instances of classes or structs can have different properties.

@antdon

So you can defs have different instances of CellRow that have different data saved inside. Try reading this

Swift Classes and Objects (with Examples)

---

@12GreenTrees

Thanks! Reading that article helped a lot!

class Bike {
  var color: String

  init(color:String) {
    self.color = color
  }
}

var bike1 = Bike(color: "Blue")

var bike2 = bike1 // < The behavior I thought was a default 
                  // behavior of classes, only happens when 
                  // you set two class instances equal to 
                  // each other. As is done here.  

bike1.color = "Red"
print(bike2.color)  // prints Red

@12GreenTrees

In this example, the behavior is not present:

// define a class
class Employee {

// define a property
var employeeID = 0
}

// create two objects of the Employee class
var employee1 = Employee()
var employee2 = Employee()

// access property using employee1
employee1.employeeID = 1001
print("Employee ID: \(employee1.employeeID)") 

// access properties using employee2
employee2.employeeID = 1002
print("Employee ID: \(employee2.employeeID)")

Output:

Employee ID: 1001
Employee ID: 1002