Very cool proof-of-concept by @_taiki_e: auto-generated enums when multiple values are returned from `-> impl trait`https://github.com/taiki-e/auto_enums …
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I like the pattern a lot where new language things are prototyped first using proc-macros, so that when the time comes to talk about an actual proposal there's already *actual* experience with the feature rather than talking mostly in the abstract.
Examples & experiments! 
7:40 AM - 8 Sep 2019
from Berlin, Germany
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