rrdb 0.0.2

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macro_rules! join_vec {
    ($x:expr) => {
        $x
    };
    ($x:expr, $($y:expr),+) => {
        {
            let join_fn = |mut lhs: Vec<_>, mut rhs: Vec<_>| -> Vec<_> {
                lhs.append(&mut rhs);
                lhs
            };

            join_fn($x, join_vec!($($y),+))
        }

    };
}

pub(crate) use join_vec;