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Diffstat (limited to 'info.toml')
| -rw-r--r-- | info.toml | 13 |
1 files changed, 6 insertions, 7 deletions
@@ -260,15 +260,14 @@ name = "vecs2" path = "exercises/vecs/vecs2.rs" mode = "test" hint = """ -Hint 1: `i` is each element from the Vec as they are being iterated. Can you try -multiplying this? +In the first function we are looping over the Vector and getting a reference to one `element` at a time. +To modify the value of that `element` we need to use the * dereference operator. You can learn more in this chapter of the Rust book: +https://doc.rust-lang.org/stable/book/ch08-01-vectors.html#iterating-over-the-values-in-a-vector -Hint 2: For the first function, there's a way to directly access the numbers stored -in the Vec, using the * dereference operator. You can both access and write to the -number that way. +In the second function this dereferencing is not necessary, because the map function expects the new value to be returned. -After you've completed both functions, decide for yourself which approach you like -better. What do you think is the more commonly used pattern under Rust developers? +After you've completed both functions, decide for yourself which approach you like better. +What do you think is the more commonly used pattern under Rust developers? """ # MOVE SEMANTICS |