String slices.| doc.rust-lang.org
A dynamically-sized view into a contiguous sequence, `[T]`.| doc.rust-lang.org
References, `&T` and `&mut T`.| doc.rust-lang.org
The `Option` type. See the module level documentation for more.| doc.rust-lang.org
[undefined]| doc.rust-lang.org
A UTF-8–encoded, growable string.| doc.rust-lang.org
Source of the Rust file `library/core/src/option.rs`.| doc.rust-lang.org
Recoverable Errors with Result| doc.rust-lang.org