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.
138aa0492aNathan Sobo committed on 4/2/2023, 10:10:16 PMparent71cf6ec
4 files changedLine totals unavailable