آغازگرها در سویفت

class Point { // Class 'Point' has no initializers

    var x // Type annotation missing in pattern

    var y // Type annotation missing in pattern

}

class Point { // Class 'Point' has no initializers

    var x: Double

    var y: Double

}

class Point {

    var x: Float

    var y: Float

    init(x: Float, y: Float) {

        self.x = x

        self.y = y

    }

}

// Example usage

var point = Point(x: 100, y: 200)

class Point {

    var x: Float?

    var y: Float?

}

var point = Point() // both the x and y properties are now set to nil

point.x = 100.0

point.y = 200.0

class User {

    var firstName: String?

    var lastName: String?

    var bio: String = "I Swift!"

}

var user = User() // user = { firstName: nil, lastName: nil, bio: "I Swift!"}

class User {

    var firstName: String

    var lastName: String

    var bio: String = "I Swift!"

    // no bio provided

    init(firstName: String, lastName: String) {

        self.firstName = firstName

        self.lastName = lastName

    }

    // bio provided

    init(firstName: String, lastName: String, bio: String) {

        self.firstName = firstName

        self.lastName = lastName

        self.bio = bio

    }

}

var me = User(firstName: "Andrei", lastName: "Puni")

// me = { firstName: "Andrei", lastName: "Puni", bio: "I Swift!"}

var silviu = User(firstName: "Silviu", lastName: "Pop", bio: "I f**ing Swift!!!")

// silviu = { firstName: "Silviu", lastName: "Pop", bio: "I f**ing Swift!!!"}

class User {

    var firstName: String

    var lastName: String

    var bio: String

    init(firstName: String, lastName: String, bio: String = "I Swift!") {

        self.firstName = firstName

        self.lastName = lastName

        self.bio = bio

    }

}

var me = User(firstName: "Andrei", lastName: "Puni")

// me = { firstName: "Andrei", lastName: "Puni", bio: "I Swift!"}

var silviu = User(firstName: "Silviu", lastName: "Pop", bio: "I f**ing Swift!!!")

// silviu = { firstName: "Silviu", lastName: "Pop", bio: "I f**ing Swift!!!"}