Función anidada rápida con valores de retorno
func operate(symbol: String) -> (Int, Int) -> Int {
// inner function to add two numbers
func add(num1:Int, num2:Int) -> Int {
return num1 + num2
}
// inner function to subtract two numbers
func subtract(num1:Int, num2:Int) -> Int {
return num1 - num2
}
let operation = (symbol == "+") ? add : subtract
return operation
}
let operation = operate(symbol: "+")
let result = operation(8, 3)
print("Result:", result)
SAMER SAEID