Less allocations probably

packages/yew/src/html/conversion/into_prop_value.rs

@@ -198,7 +198,7 @@ impl IntoPropValue<VList> for ChildrenRenderer<VNode> {
 impl<C: BaseComponent> IntoPropValue<VList> for VChild<C> {
     #[inline]
     fn into_prop_value(self) -> VList {
-        VList::from_iter([VNode::from(self)])
+        VList::from(VNode::from(self))
     }
 }
 
@@ -211,7 +211,7 @@ impl IntoPropValue<ChildrenRenderer<VNode>> for AttrValue {
 impl IntoPropValue<VNode> for Vec<VNode> {
     #[inline]
     fn into_prop_value(self) -> VNode {
-        VNode::VList(Rc::new(VList::from_iter(self)))
+        VNode::VList(Rc::new(VList::from(self)))
     }
 }
 

packages/yew/src/virtual_dom/vlist.rs

@@ -92,6 +92,34 @@ impl From<Option<Rc<Vec<VNode>>>> for VList {
     }
 }
 
+impl From<Vec<VNode>> for VList {
+    fn from(children: Vec<VNode>) -> Self {
+        if children.is_empty() {
+            VList::new()
+        } else {
+            let mut vlist = VList {
+                children: Some(Rc::new(children)),
+                fully_keyed: FullyKeyedState::Unknown,
+                key: None,
+            };
+            vlist.recheck_fully_keyed();
+            vlist
+        }
+    }
+}
+
+impl From<VNode> for VList {
+    fn from(child: VNode) -> Self {
+        let mut vlist = VList {
+            children: Some(Rc::new(vec![child])),
+            fully_keyed: FullyKeyedState::Unknown,
+            key: None,
+        };
+        vlist.recheck_fully_keyed();
+        vlist
+    }
+}
+
 impl VList {
     /// Creates a new empty [VList] instance.
     pub const fn new() -> Self {

packages/yew/src/virtual_dom/vnode.rs

@@ -65,7 +65,7 @@ impl VNode {
             match *self {
                 Self::VList(ref mut m) => return Rc::make_mut(m),
                 _ => {
-                    *self = VNode::VList(Rc::new(VList::from_iter([mem::take(self)])));
+                    *self = VNode::VList(Rc::new(VList::from(mem::take(self))));
                 }
             }
         }