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lilymonade 2025-03-13 21:20:56 +01:00
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10
subject_text/vec/access.md
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@ -16,13 +16,11 @@ if vec.len() < 1 {
Try to implement these functions using non-panicking methods like [`last`](https://doc.rust-lang.org/std/primitive.slice.html#method.last), [`last_chunk`](https://doc.rust-lang.org/std/primitive.slice.html#method.last_chunk), or [`get`](https://doc.rust-lang.org/std/primitive.slice.html#method.get).
```note
Don't be afraid of the `get` function prototype, look at the examples, they are fairly simple, it's just that `get` can work on multiple types, allowing for slice indexing as well as single element indexing.
```
> ## note
> Don't be afraid of the `get` function prototype, look at the examples, they are fairly simple, it's just that `get` can work on multiple types, allowing for slice indexing as well as single element indexing.
```note
You may want to look at the [`sort`](https://doc.rust-lang.org/std/primitive.slice.html#method.sort) and [`to_vec`](https://doc.rust-lang.org/std/primitive.slice.html#method.to_vec) functions for the median.
```
> ## note
> You may want to look at the [`sort`](https://doc.rust-lang.org/std/primitive.slice.html#method.sort) and [`to_vec`](https://doc.rust-lang.org/std/primitive.slice.html#method.to_vec) functions for the median.
```prototype
/// Add the last two numbers of the input slice.

11
subject_text/vec/index.md
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@ -6,11 +6,8 @@ exercises = ["access.md"]
Let's now look at some functions on [`slice`](https://doc.rust-lang.org/std/primitive.slice.html)s and [`Vec`](https://doc.rust-lang.org/std/vec/struct.Vec.html)s. Instead of manualy checking things we will follow the type system using `Option`s and `Result`s we saw earlier.
```note
Slices (`[T]`) represent some memory space containing an arbitrary number of elements of type `T`. Since they don't have a size known at compilation time, we can only access them through pointers, commonly `&[T]` (references to slices).
```
```deepening
`Vec<T>` can be seen as [owned](https://doc.rust-lang.org/book/ch04-00-understanding-ownership.html) `[T]`, it means that every function working on a `&[T]` can work on a `&Vec<T>`.
```
> ## note
> Slices (`[T]`) represent some memory space containing an arbitrary number of elements of type `T`. Since they don't have a size known at compilation time, we can only access them through pointers, commonly `&[T]` (references to slices).
> ## deepening
> `Vec<T>` can be seen as [owned](https://doc.rust-lang.org/book/ch04-00-understanding-ownership.html) `[T]`, it means that every function working on a `&[T]` can work on a `&Vec<T>`.