rustHow do you create a Rust string from a character array?

Creating a Rust string from a character array can be done using the String::from_utf8 function. This function takes a &[u8] as an argument and returns a Result<String, FromUtf8Error>.

Example code

let chars: &[u8] = &[104, 101, 108, 108, 111];
let string = String::from_utf8(chars).unwrap();

Output example

hello

The code above creates a &[u8] from the character array [104, 101, 108, 108, 111] and passes it to the String::from_utf8 function. The unwrap method is used to convert the Result<String, FromUtf8Error> into a String.

Code explanation

• &[u8]: A type of array that contains 8-bit unsigned integers.
• String::from_utf8: A function that takes a &[u8] as an argument and returns a Result<String, FromUtf8Error>.
• unwrap: A method that converts a Result<String, FromUtf8Error> into a String.

Helpful links

• Rust Documentation - String
• Rust Documentation - FromUtf8Error

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