notohh/rustlings
notohh/rustlings
1
0
Fork 0
mirror of https://github.com/notohh/rustlings.git synced 2024-11-22 05:52:23 -05:00
Code Issues Projects Releases Packages Wiki Activity

docs(vecs2): update hints

Browse source
This commit is contained in:
J.c 2023-04-08 10:50:50 +02:00
parent 9fc336c7f7
commit 8cb5cba775
1 changed files with 6 additions and 7 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

13
info.toml
View file

@ -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