rustrust string as_str

as_str is a method of the String type in the Rust programming language. It returns a string slice (&str) that contains the entire string. This method is useful when passing a String to a function that requires a &str argument.

Example

let my_string = String::from("Hello world!");
let my_str = my_string.as_str();
println!("{}", my_str);

Output example

Hello world!

Code explanation

• let my_string = String::from("Hello world!");: This line creates a String from the string literal "Hello world!".
• let my_str = my_string.as_str();: This line calls the as_str method on the my_string String to get a &str string slice.
• println!("{}", my_str);: This line prints the my_str string slice to the console.

Helpful links

• Rust String Documentation

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