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use std::iter::{Extend, IntoIterator}; #[derive(Debug, Default)] pub struct AnyQueryResult { pub(crate) rows_affected: u64, pub(crate) last_insert_id: Option<i64>, } impl AnyQueryResult { pub fn rows_affected(&self) -> u64 { self.rows_affected } pub fn last_insert_id(&self) -> Option<i64> { self.last_insert_id } } impl Extend<AnyQueryResult> for AnyQueryResult { fn extend<T: IntoIterator<Item = AnyQueryResult>>(&mut self, iter: T) { for elem in iter { self.rows_affected += elem.rows_affected; self.last_insert_id = elem.last_insert_id; } } }