Macro header_vec

macro_rules! header_vec {
    ($h:expr; $($v:expr),* $(,)?) => { ... };
    ($h:expr; $v:expr; $len:expr) => { ... };
}

Creates a HeaderVec with the given header and elements;

Examples:

• header_vec!["foo"; 1, 2, 3]
• header_vec![123; true; 32]