Function Initialize in runtime in Swift

In Swift, one way to initialize a function or method at runtime is by using closures or anonymous functions.

Here's an example:

let myClosure = { (a: Int, b: Int) -> Int in
    return a + b
}
let result = myClosure(2, 3)

print(result) // Output: 5

In this example, we first define a closure myClosure that takes two integers a and b and returns their sum. We then pass arguments 2 and 3 to this closure and the result is printed as 5.

Another way to initialize a function at runtime is by using the Selector class. Here's an example:

class MyClass {
    @objc func myMethod() {
        print("My method was called.")
    }
}
let myObject = MyClass()

let mySelector = #selector(MyClass.myMethod)
myObject.perform(mySelector) // Output: "My method was called."

In this example, we first define a class MyClass that has a method myMethod. We then create an object of this class and get a reference to the selector of the myMethod method using the #selector syntax. Finally, we call the perform method on the myObject instance with the mySelector argument which will call the myMethod method of the MyClass class and the output will be "My method was called."