Borrowed_gen_data

[rbtcollins]

Without this semicolon attempting to return an impl '_ + Iterator<...> + Clone from a generator results in an error about the temp borrow created in run_gen. The ; causes the temp to be dropped before the outer scope that owns data exits and runs its own drops.

[remi-dupre]

Hi!

Thanks for the fix!

I've been working on a refactor which uses less macros. It will make the code more maintainable and fix #15. However this PR currently removes the possibility to return borrowed data from the generator. Do you think it would be a big bummer for you?

[rbtcollins]

Thank you for merging my fix! I've commented on #15 - it is definitely recursive; whether you can express your syntax non-recursively is a different question, but I'm sure you could do an incompatible change that would give you a non-recursive syntax with macros if needed - no worse than an incompatible change to not use macros.

On the macro vs non-macro question I have no strong opinion.

On borrowing a preference, written up in the PR you have open for that.

Thanks!