Swift

Test Your Swift Skills!

Put your knowledge of Swift programming to the test with this engaging quiz! Whether you're a beginner or an experienced developer, you'll find challenging questions that cover various aspects of the Swift language.

✔︝ 12 carefully crafted questions
✔︝ Test your understanding of syntax and concepts
✔︝ Instant feedback on your answers

12 Questions3 MinutesCreated by CodingWizard752

Agrega tu nombre

Cual es la palabra con la cual declaramos una constante en swift

Const

Let

Var

Que imprime el siguiente código

class Starship {
    var type: String
    var age: Int
}

let serenity = Starship(type: "Firefly", age: 24)
print(serenity.type)

Firefly

No compila

Compila pero crashea

Cuantos strings tendrá el array al terminar la ejecución?

let names = [String]()
names.append("Amy")
names.append("Clara")
names.append("Rory")

Que imprime el codigo siguiente:

let I = 3

switch I {

case 1:

print("Number was 1")

case 2:

print("Number was 2")

case 3:

print("Number was 3")

default:

print("otro valor")

}

Que imprime el siguiente código:

let names = ["Amy", "Clara"]

for I in 0 ... names.count {

print("Hello, \(names[i])!")

}

Hello, Amy! Hello, Clara!

No compila

El código crashea en ejecución

Que imprime el siguiente codigo:

let I = "5"

let j = I + i

print(j)

No compila porque no se puede sumar dos strings

Compila pero crashea

Que pasa con el siguiente codigo:

final class Dog {
    func bark() {
        print("Woof!")
    }
}

class Corgi : Dog {
    override func bark() {
        print("Yip!")
    }
}

let muttface = Corgi()
muttface.bark()

Imprime "Yip!"

Imprime "Woof!"

Error al sobre escribir una clase final

Que imprime el siguiente código

struct Starship {

var name: String

}

let tardis = Starship(name: "TARDIS")

var enterprise = tardis

enterprise.name = "Enterprise"

print(tardis.name)

TARDIS

Enterprise

No compila

Crashea en ejecución

Que tipo de dato tiene i

let I = 10.2

Float

Double

No tiene ya que no se especifico el tipo de dato

Propiedades de una clase

No heredan

Son de tipo Referencia

Son de tipo Valor

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