o-nnerb

class Animal {
    func makeNoise() {
        print("Unknown animal!")
    }
}

class Dog: Animal {
    override func makeNoise() {
        print("The dog goes woof!")
    }

o-nnerb

func makeNoise(animal: Animal) {
    switch animal {
        case let dog as Dog:
            print("The dog goes woof!")
        case let cat as Cat:
            print("The cat goes meow!")
        case let bird as Bird:
            print("The bird goes tweet!")
        default:
            print("Unknown animal!")

o-nnerb

func multiplyNumbers(_ firstNumber: Int, by secondNumber: Int) -> Int {
    return firstNumber * secondNumber
}

o-nnerb

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

o-nnerb

// Initializes i with zero
int i = 0;

o-nnerb

# Check if a user has an "admin" type
def check_admin_permission(user):
    if user.type == 'admin':
        return True
    else:
        return False

o-nnerb

# Calculates the mean of a list of numbers
def calculate_mean(numbers):
    total = sum(numbers)
    return total / len(numbers)

o-nnerb

# Function that calculates the average of a list of numbers
# Version 2.0, updated on 2022-05-01 by João Silva
# Last modification: 2022-05-01 14:30:00 (Brasilia time)
def calculate_mean(numbers):
    total = sum(numbers)
    return total / len(numbers)

o-nnerb

import Injection
import Domain

protocol LoginInteractorInput {

    func validate(email: String)

    func validate(password: String)

    func login(_ email: String, _ password: String)

o-nnerb

import Foundation

protocol LoginPresenterInput {

    func emailDidChange(_ email: String)

    func passwordDidChange(_ password: String)

    func submit()
}