Macro jlrs::named_tuple

macro_rules! named_tuple {
    ($frame : expr, $name : expr => $value : expr) => { ... };
    ($frame : expr, $name : expr => $value : expr, $($rest : tt) +) => { ... };
    ($frame : expr, $names : expr, $values : expr, $name : expr => $value : expr,
 $($rest : tt) +) => { ... };
    ($frame : expr, $names : expr, $values : expr, $name : expr => $value : expr) => { ... };
}

Create a new named tuple. You will need a named tuple to call functions with keyword arguments.

Example:

// Three slots; two for the inputs and one for the output.
julia.scope_with_slots(3, |global, frame| {
    // Create the two arguments, each value requires one slot
    let i = Value::new(&mut *frame, 2u64)?;
    let j = Value::new(&mut *frame, 1u32)?;

    let _nt = named_tuple!(&mut *frame, "i" => i, "j" => j)?;

    Ok(())
}).unwrap();