p1r0
/
rustlings
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Merge pull request #1473 from Jak-Ch-ll/update-hints-for-vecs2 

docs(vecs2): update hints
This commit is contained in:
liv 2023-09-04 14:39:28 +02:00 committed by GitHub
parent a5fe578e79 ad0fad4218
commit 14fbdd20ac
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
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

@ -268,15 +268,14 @@ name = "vecs2"
path = "exercises/vecs/vecs2.rs"
mode = "test"
hint = """
Hint 1: In the code, the variable `element` represents an item from the Vec as it is 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