Macro bytes 

macro_rules! bytes {
    [$pat:expr;$len:expr] => { ... };
}

Macro to create a [ByteArray] with a value and a count similar to vec![val; count]

Examples

 use byte_array_ops::bytes;

 let bytes = bytes![5;10];

 assert_eq!(bytes.as_bytes(),&vec![5u8;10]);