BTreeMap::into_values()を使うように

Author: hotate29

atcoder-problems-backend/sql-client/src/rated_point_sum.rs

@@ -56,7 +56,7 @@ impl RatedPointSumClient for PgPool {
         let (rated_contest_ids, rated_problem_ids) =
             tokio::try_join!(rated_contest_ids_fut, rated_problem_ids_fut)?;
 
-        let rated_contest_ids = rated_contest_ids.into_iter().collect::<BTreeSet<_>>();
+        let rated_contest_ids = BTreeSet::from_iter(rated_contest_ids);
         let rated_problem_ids = rated_problem_ids
             .into_iter()
             .filter(|p| rated_contest_ids.contains(&p.contest_id))
@@ -86,7 +86,7 @@ impl RatedPointSumClient for PgPool {
             })
             .into_iter()
             .map(|(user_id, set)| {
-                let sum = set.into_iter().map(|(_, point)| point).sum::<i64>();
+                let sum = set.into_values().sum::<i64>();
                 (user_id, sum)
             })
             .collect::<Vec<_>>();

atcoder-problems-backend/sql-client/src/streak.rs

@@ -105,7 +105,7 @@ impl StreakClient for PgPool {
         let user_max_streak = first_ac_map
             .into_iter()
             .map(|(user_id, m)| {
-                let max_streak = get_max_streak(m.into_iter().map(|(_, utc)| utc).collect());
+                let max_streak = get_max_streak(m.into_values().collect());
                 (user_id, max_streak)
             })
             .collect::<Vec<_>>();

atcoder-problems-backend/src/bin/dump_json.rs

@@ -83,8 +83,8 @@ async fn main() -> Result<()> {
     }
 
     let mut language_count = reduced_language_count
-        .into_iter()
-        .flat_map(|(_, v)| v.into_iter())
+        .into_values()
+        .flatten()
         .map(|(_, e)| e)
         .collect::<Vec<_>>();
     language_count.sort_by(|a, b| {