fn field_id_to_index()

in crates/iceberg/src/spec/datatypes.rs [288:295]


    fn field_id_to_index(&self, field_id: i32) -> Option<usize> {
        self.id_lookup
            .get_or_init(|| {
                HashMap::from_iter(self.fields.iter().enumerate().map(|(i, x)| (x.id, i)))
            })
            .get(&field_id)
            .copied()
    }