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APPLE SWIFT PLAYGROUNDS

Quiz by Katherine McCoy

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9 questions
Show answers
  • Q1
    In Apple Swift Playgrounds, what is the correct syntax to declare a constant?
    const
    define
    var
    let
    30s
  • Q2
    What is the purpose of a 'for-in' loop in Swift?
    To perform arithmetic operations
    To define a function
    To declare a variable
    To iterate over a sequence or collection
    30s
  • Q3
    Which keyword is used to define a function in Swift?
    method
    func
    def
    function
    30s
  • Q4
    What is the correct way to create an empty array in Swift?
    []
    nil
    ()
    {}
    30s
  • Q5
    What is the correct syntax to define a class in Swift?
    object
    class
    type
    struct
    30s
  • Q6
    What does the 'self' keyword refer to in Swift?
    The global scope
    A specific method
    An external object
    The current instance of a class or structure
    30s
  • Q7
    What is the correct syntax to print a message to the console in Swift?
    display()
    print()
    log()
    output()
    30s
  • Q8
    What is the correct syntax to add an element to the end of an array in Swift?
    push()
    insert()
    append()
    add()
    30s
  • Q9
    What is the purpose of a 'guard' statement in Swift?
    To define a class
    To exit a function, method, or loop if a condition is not met
    To perform mathematical calculations
    To declare a variable
    30s

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