Add downcast_ref to AnyViewHandle

I use unsafe code to transmute an AnyViewHandle to a ViewHandle<T> when the type matches. Because ViewHandle<T> is repr(transparent) to the wrapped AnyViewHandle, this is safe.
2023-04-02 16:10:16 -06:00
parent 71cf6ec5ae
commit 138aa0492a
4 changed files with 15 additions and 12 deletions
@@ -2279,8 +2279,7 @@ mod tests {
                .map(|(ix, item)| {
                    let mut state = item
                        .as_any()
-                        .clone()
-                        .downcast::<TestItem>()
+                        .downcast_ref::<TestItem>()
                        .unwrap()
                        .read(cx)
                        .label