rustHow to join bytes in Rust

Joining bytes in Rust can be done using the concat() method from the std::vec module. This method takes a vector of bytes and returns a single byte vector containing all the bytes from the original vector.

Code example:

use std::vec;

let bytes1 = vec![0x01, 0x02, 0x03];
let bytes2 = vec![0x04, 0x05, 0x06];

let joined_bytes = vec::concat(vec![bytes1, bytes2]);

println!("{:?}", joined_bytes);

Output

[1, 2, 3, 4, 5, 6]

Explanation:

• use std::vec: imports the vec module from the std library
• let bytes1 = vec![0x01, 0x02, 0x03]: creates a vector of bytes containing the values 0x01, 0x02, and 0x03
• let bytes2 = vec![0x04, 0x05, 0x06]: creates a vector of bytes containing the values 0x04, 0x05, and 0x06
• let joined_bytes = vec::concat(vec![bytes1, bytes2]): calls the concat() method from the vec module, passing in a vector containing the two byte vectors bytes1 and bytes2
• println!("{:?}", joined_bytes): prints the joined bytes vector

Helpful links:

• Rust Documentation - Vec::concat()
• Rust By Example - Vectors

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