What is the point of Getters and Setters? What do they do?

Answer 1

Getters and Setters a common functions / methods to get or set values of class members or fields in a controllable way.

Examples:
--
class Person {

// field of class Person which is called age
var age:Int = 0

// getter for age
public func getAge() -> Int {

return self.age

}

// setter for age (only values greater zero are accepted)
public func setAge(age:Int) {

if age > 0 {

self.age = age

}

}

}

Answer 2

when you use those func you can do something to the value. as the setAge function you could check age illegible or not.