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Add speaker notes for option-result.md

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Fabian Bornhofen
2023-01-11 14:19:21 +01:00
parent dd194f07c9
commit 02e1f4b879
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src/std/option-result.md
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@ -12,3 +12,14 @@ fn main() {
println!("idx: {idx:?}"); println!("idx: {idx:?}");
} }
``` ```
<details>
* `Option` and `Result` are widely used not just in the standard library.
* `Option<&T>` has zero space overhead compared to `&T`.
* `Result` is the standard type to implement error handling as we will see on Day 3.
* `binary_search` returns `Result<usize, usize`.
* If found, `Result::Ok` holds the index where the element is found.
* Otherwise, `Result::Err` contains the index where such an element should be inserted.
</details>