Function mz_repr::row::datums_size

pub fn datums_size<'a, I, D>(iter: I) -> usizewhere
    I: IntoIterator<Item = D>,
    D: Borrow<Datum<'a>>,

Number of bytes required by a sequence of datums.

This method can be used to right-size the allocation for a Row before calling RowPacker::extend.