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Update patterns/unsafe-mods.md

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Co-Authored-By: llogiq <bogusandre@gmail.com>
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Chris Wong 2018-12-15 18:29:45 +01:00 committed by GitHub
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@ -17,7 +17,7 @@ If you have `unsafe` code, create the smallest possible module that can uphold t
## Examples ## Examples
* The [`optional`](https://crates.io/crates/optional) crate has one unsafe module for converting a `&T` to either a slice of one `[T]` or an empty slice. * The [`optional`](https://crates.io/crates/optional) crate has one unsafe module for converting a `&T` to either a slice of one `[T]` or an empty slice.
* `std`s `String` class is basically just a wrapper over `Vec<u8>` with the added invariant that the contents must be valid unicode. The operations on `String` ensure this behavior, however, users have the option of using an `unsafe` method to create a `String`, in which case the onus is on them to guarantee the validity of the contents. * `std`s `String` class is a wrapper over `Vec<u8>` with the added invariant that the contents must be valid UTF-8. The operations on `String` ensure this behavior. However, users have the option of using an `unsafe` method to create a `String`, in which case the onus is on them to guarantee the validity of the contents.
## See also ## See also