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Rust 1.26.0
a77568041

Documentation

There is a new edition of the book and this is an old link.

Documentation comments use /// instead of // and support Markdown notation for formatting the text if you’d like. You place documentation comments just before the item they are documenting.

/// Adds one to the number given.
///
/// # Examples
///
/// ```
/// let five = 5;
///
/// assert_eq!(6, my_crate::add_one(5));
/// ```
pub fn add_one(x: i32) -> i32 {
    x + 1
}Run

Here are the relevant sections in the new and old books: