allow changing the number of root nodes

packages/rsx/src/lib.rs

@@ -212,7 +212,7 @@ impl<'a, Ctx: HotReloadingContext> ToTokens for TemplateRenderer<'a, Ctx> {
                 parent: None,
                 key: #key_tokens,
                 template: std::cell::Cell::new(TEMPLATE),
-                root_ids: std::cell::Cell::from_mut( __cx.bump().alloc([None; #num_roots]) as &mut _).as_slice_of_cells(),
+                root_ids: Default::default(),
                 // root_ids: std::cell::Cell::from_mut( __cx.bump().alloc([None; #num_roots]) as &mut [::dioxus::core::ElementId]).as_slice_of_cells(),
                 dynamic_nodes: __cx.bump().alloc([ #( #node_printer ),* ]),
                 dynamic_attrs: __cx.bump().alloc([ #( #dyn_attr_printer ),* ]),