That seems to be a choice of the author, a new approach has been uploaded that uses the exact same logic as the python approach and is similarly as succinct. h

That seems to be a choice of the author, a new approach has been uploaded that uses the exact same logic as the python approach and is similarly as succinct. https://github.com/josevalim/nested-data-structure-traversal/blob/master/rust/for_in.rs https://github.com/josevalim/nested-data-structure-traversal...