perf: 使用 itertools 提供的 join，避免 collect 到 Vec 的额外分配 (#652)

crates/bili_sync/src/api/helper.rs

@@ -116,10 +116,7 @@ async fn execute_page_update_batch(
     txn: &DatabaseTransaction,
     pages: impl Iterator<Item = (i32, u32)>,
 ) -> Result<(), sea_orm::DbErr> {
-    let values = pages
-        .map(|p| format!("({}, {})", p.0, p.1))
-        .collect::<Vec<_>>()
-        .join(", ");
+    let values = pages.map(|p| format!("({}, {})", p.0, p.1)).join(", ");
     if values.is_empty() {
         return Ok(());
     }

crates/bili_sync/src/api/routes/video_sources/mod.rs

@@ -7,6 +7,7 @@ use axum::routing::{get, post, put};
 use bili_sync_entity::rule::Rule;
 use bili_sync_entity::*;
 use bili_sync_migration::Expr;
+use itertools::Itertools;
 use sea_orm::ActiveValue::Set;
 use sea_orm::entity::prelude::*;
 use sea_orm::{ColumnTrait, DatabaseConnection, EntityTrait, QuerySelect, QueryTrait, TransactionTrait};
@@ -347,11 +348,7 @@ pub async fn evaluate_video_source(
             SET should_download = tempdata.should_download \
             FROM tempdata \
             WHERE video.id = tempdata.id",
-            chunk
-                .iter()
-                .map(|item| format!("({}, {})", item.0, item.1))
-                .collect::<Vec<_>>()
-                .join(", ")
+            chunk.iter().map(|item| format!("({}, {})", item.0, item.1)).join(", ")
         );
         txn.execute_unprepared(&sql).await?;
     }

crates/bili_sync/src/config/current.rs

@@ -3,6 +3,7 @@ use std::sync::{Arc, LazyLock};
 
 use anyhow::{Result, bail};
 use croner::parser::CronParser;
+use itertools::Itertools;
 use sea_orm::DatabaseConnection;
 use serde::{Deserialize, Serialize};
 use validator::Validate;
@@ -103,13 +104,7 @@ impl Config {
             }
         };
         if !errors.is_empty() {
-            bail!(
-                errors
-                    .into_iter()
-                    .map(|e| format!("- {}", e))
-                    .collect::<Vec<_>>()
-                    .join("\n")
-            );
+            bail!(errors.into_iter().map(|e| format!("- {}", e)).join("\n"));
         }
         Ok(())
     }