Use Map::with_capacity in value::Serializer::serialize_map

goffrie · web-flow · commit 513e5b2f74eb · 2025-01-18T15:38:08.000-08:00
diff --git a/src/value/ser.rs b/src/value/ser.rs
@@ -261,9 +261,9 @@ impl serde::Serializer for Serializer {
         })
     }
 
-    fn serialize_map(self, _len: Option<usize>) -> Result<Self::SerializeMap> {
+    fn serialize_map(self, len: Option<usize>) -> Result<Self::SerializeMap> {
         Ok(SerializeMap::Map {
-            map: Map::new(),
+            map: Map::with_capacity(len.unwrap_or(0)),
             next_key: None,
         })
     }

Original file line number	Diff line number	Diff line change
`@@ -261,9 +261,9 @@ impl serde::Serializer for Serializer {`
`261`	`261`	`})`
`262`	`262`	`}`
`263`	`263`
`264`		`- fn serialize_map(self, _len: Option<usize>) -> Result<Self::SerializeMap> {`
	`264`	`+ fn serialize_map(self, len: Option<usize>) -> Result<Self::SerializeMap> {`
`265`	`265`	`Ok(SerializeMap::Map {`
`266`		`- map: Map::new(),`
	`266`	`+ map: Map::with_capacity(len.unwrap_or(0)),`
`267`	`267`	`next_key: None,`
`268`	`268`	`})`
`269`	`269`	`}`