Rust Comments

In Rust, you can write comments to provide information and documentation about your code. There are two types of comments in Rust: single-line comments and multi-line comments.

Single-line comments start with // and continue until the end of the line. For example:

// This is a single-line comment

Multi-line comments start with /* and end with */. They can span multiple lines. For example:

/*
This is a
multi-line
comment
*/

It's good practice to write comments that explain the purpose and functionality of your code. Comments can be helpful to other developers who are reading your code, as well as to your future self when you come back to the code later.

Rust also has a feature called doc comments, which are used to generate documentation for your code. Doc comments start with /// or /** and end with */. They are used to provide information about the purpose, usage, and behavior of your functions, structs, and other elements. Here's an example:

/// This function adds two numbers together and returns the result.
///
/// # Examples
///
/// ```
/// let result = add(2, 3);
/// assert_eq!(result, 5);
/// ```
fn add(a: i32, b: i32) -> i32 {
    a + b
}

When you run the rustdoc tool on this code, it will generate documentation that includes the information you've provided in the doc comments.