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Swift MCQs

Which of these is a valid syntax for iterating through the keys and values of a dictionary?
let dictionary = [keyOne : valueOne, keyTwo : valueTwo]

for (key, value) in dictionary { println("Key: (key) Value: (value)") }

for (key, value) in enumerate(dictionary) { println("Key: (key) Value: (value)") }

for (key, value) in (dictionary.keys, dictionary.values) { println("Key: (key) Value: (value)") }

for (key, value) in dictionary.enumerate() { println("Key: (key) Value: (value)") }

Answer

Correct Answer: for (key, value) in dictionary.enumerate() { println("Key: (key) Value: (value)") }

Explanation:

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