Millist lähenemist kasutaksite: klassi meetod või staatiline meetod, ja miks?

The choice between a class instance method and a static method depends on the context:

• Class method (instance method) is used when the method works with the state of a specific object, i.e., depends on its property values.
• Static method does not depend on the object's state and can be called without creating an instance of the class.

In iOS (Swift/Objective-C), instance methods are usually used when working with object data. Static methods are suitable for utility functions, factory methods, or when the object's state is not required.

Example in Swift:

class Calculator {
    static func add(_ a: Int, _ b: Int) -> Int {
        return a + b
    }

    func multiply(_ a: Int, _ b: Int) -> Int {
        return a * b
    }
}

// Calling static method without creating an object
let sum = Calculator.add(2, 3)

// Calling instance method requires an object
let calc = Calculator()
let product = calc.multiply(2, 3)

Therefore, choose a static method for functions without state, and a class method when access to object data is needed.