rustHow do I get the byte length of a string in Rust?

The byte length of a string in Rust can be obtained using the len() method. This method returns the number of bytes in the string.

Example code

let s = "Hello world!";
let len = s.len();
println!("The length of '{}' is {} bytes.", s, len);

Output example

The length of 'Hello world!' is 12 bytes.

Code explanation

• let s = "Hello world!";: This line declares a string variable s and assigns it the value "Hello world!".
• let len = s.len();: This line calls the len() method on the s string variable and assigns the result to the len variable.
• println!("The length of '{}' is {} bytes.", s, len);: This line prints the length of the s string variable to the console.

Helpful links

• String::len()

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