Implement `try_for_each`?

[jorgecarleitao]

Is it possible to use fallible items such as StreamingIterator<Item = Result<Page, String>> ? If yes, how do we convert the errors?

It seems that if we use something like item.as_ref()? the error is borrowed and will have a lifetime, which makes it a bit more difficult to e.g. use in external erros such as External(Box<dyn Error + ...>)?

[cuviper]

Have you looked at the sister crate, fallible_streaming_iterator? However, I don't think that's actively maintained. There's also the newer lending-iterator crate that emulates GATs (generic associated types).