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docs(vecs2): update hints

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J.c 2023-04-08 10:50:50 +02:00
parent 9fc336c7f7
commit 8cb5cba775
1 changed files with 6 additions and 7 deletions
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info.toml
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@ -260,15 +260,14 @@ name = "vecs2"
path = "exercises/vecs/vecs2.rs" path = "exercises/vecs/vecs2.rs"
mode = "test" mode = "test"
hint = """ hint = """
Hint 1: `i` is each element from the Vec as they are being iterated. Can you try In the first function we are looping over the Vector and getting a reference to one `element` at a time.
multiplying this? 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 second function this dereferencing is not necessary, because the map function expects the new value to be returned.
in the Vec, using the * dereference operator. You can both access and write to the
number that way.
After you've completed both functions, decide for yourself which approach you like After you've completed both functions, decide for yourself which approach you like better.
better. What do you think is the more commonly used pattern under Rust developers? What do you think is the more commonly used pattern under Rust developers?
""" """
# MOVE SEMANTICS # MOVE SEMANTICS