Rustlings move_semantics3: Specifying that a function argument is mutable
InstructorChris Biscardi
Published 4 years ago
Updated 3 years ago
README for this exercise.
Chris Biscardi: [0:00] In move_semantics3, we're supposed to make a compile without adding any new lines and just changing existing ones. In this case, we can't borrow a vec as mutable inside of fill_vec on line 20. In contrast, for the last two move_semantics, we aren't creating a new vec inside of the fill_vec function this time.
[0:16] If we specify that we want to mutate vec in our type signature, we can then mutate vec and our tests pass.
egghead
~ 40 minutes ago
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