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Merge pull request #163 from rastringer/patch-1

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Speaker notes to 6.4 Slices
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Martin Geisler 2023-01-12 17:16:57 +01:00 committed by GitHub
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src/basic-syntax/slices.md
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@ -14,3 +14,17 @@ fn main() {
* Slices borrow data from the sliced type.
* Question: What happens if you modify `a[3]`?
<details>
* We create a slice by borrowing `a` and specifying the starting and ending indexes in brackets.
* If the slice starts at index 0, Rust’s range syntax means we can drop the starting index.
* The same is true for the last index, so `&a[2..a.len()]` and `&a[2..]` are equal.
* `s` is a reference to a slice of `i32`s. Notice that the type of `s` no longer mentions the array length. This allows us to performing computations on slices of different sizes.
* Slices always borrow from another object. In this example, `a` has to remain 'alive' so we can take a slice from it.
</details>