Hey folks!
I was watching the video about async in Rust from Jon Gjengset and here he's using a "<-" operator in the select macro. What is this and what does it do? 
I really can't find any information about it.
Regards
keks
When you create a macro you can more or less use whatever syntax you want. There's no such thing as an <- operator outside of macros, and inside macros it just means whatever the macro author wants it to.
(As an aside, I don't think the real select! macro uses the <- syntax. But it could have done so.)
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Ahhh, I see!! Thanks a lot for your help!