Project 5: Word Scramble

Question 1/12: Which of these statements are true?

Hint: If you're not sure, try looking at or running your code. Click to show.

• Option 1: Weak and unowned references are the same.

  Weak references must be unwrapped before use; unowned references can be used directly.

• Option 2: Using isEmpty is faster than count == 0

  isEmpty can return true as soon as it knows at least one item exists, where count == 0 has to count all the letters in a string.

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