Implement Value for slice[T] (#410)

dtzxporter · web-flow · commit 066d678671d2 · 2022-03-03T09:05:59.000+01:00
Adds the ability to serialize slices of T: Value. Used to prevent having to use Vec&lt;T&gt; and saves allocations.
diff --git a/scylla/src/frame/value.rs b/scylla/src/frame/value.rs
@@ -550,6 +550,12 @@ impl<T: Value> Value for Vec<T> {
     }
 }
 
+impl<T: Value> Value for &[T] {
+    fn serialize(&self, buf: &mut Vec<u8>) -> Result<(), ValueTooBig> {
+        serialize_list_or_set(self.iter(), self.len(), buf)
+    }
+}
+
 fn serialize_tuple<V: Value>(
     elem_iter: impl Iterator<Item = V>,
     buf: &mut Vec<u8>,

Original file line number	Diff line number	Diff line change
`@@ -550,6 +550,12 @@ impl<T: Value> Value for Vec<T> {`
`550`	`550`	`}`
`551`	`551`	`}`
`552`	`552`
	`553`	`+impl<T: Value> Value for &[T] {`
	`554`	`+ fn serialize(&self, buf: &mut Vec<u8>) -> Result<(), ValueTooBig> {`
	`555`	`+ serialize_list_or_set(self.iter(), self.len(), buf)`
	`556`	`+ }`
	`557`	`+}`
	`558`	`+`
`553`	`559`	`fn serialize_tuple<V: Value>(`
`554`	`560`	`elem_iter: impl Iterator<Item = V>,`
`555`	`561`	`buf: &mut Vec<u8>,`