rustrust string b prefix

A String in Rust is a UTF-8 encoded, growable piece of text. It can be created from a literal string or a &str reference. The b prefix is used to create a &[u8] byte slice from a string literal.

Example

let byte_slice = b"Hello world!";

Output example

[72, 101, 108, 108, 111, 32, 119, 111, 114, 108, 100, 33]

The b prefix creates a byte slice from the string literal, which is a sequence of bytes. In this example, the byte slice contains the ASCII codes for each character in the string.

Helpful links

• Rust Documentation - Strings
• Rust Documentation - Byte Strings

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