very relevant to us: <https://internals.rust-lang....
# developmentw
witty-crayon-22786
06/19/2019, 8:51 PMvery relevant to us: https://internals.rust-lang.org/t/how-often-do-you-want-non-send-futures/10360 cc @average-vr-56795
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average-vr-56795
06/19/2019, 8:51 PMAnything in particular? All our futures are `Send`…
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witty-crayon-22786
06/19/2019, 8:52 PMbecause they have to be
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average-vr-56795
06/19/2019, 8:52 PMI don’t think we have any that we wish weren’t…
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witty-crayon-22786
06/19/2019, 8:52 PMi have not yet read the question (300 email to go!)
witty-crayon-22786
06/19/2019, 8:53 PMbeing !Send would mean you don't need synchronization
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average-vr-56795
06/19/2019, 8:53 PMThat would be being !Sync
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witty-crayon-22786
06/19/2019, 8:53 PMwhich is cheaper in theory?
witty-crayon-22786
06/19/2019, 8:53 PMhmmm yes, true.
witty-crayon-22786
06/19/2019, 8:54 PMk, i will read it when i get closer to the bottom of my inbox
witty-crayon-22786
06/19/2019, 8:55 PM(Sync implies Send, but not vice-versa i guess? they're tangled up)
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average-vr-56795
06/19/2019, 8:55 PMSend == “can be passed between threads”
Sync == “multiple threads can access concurrently”
So yeah, Sync implies Send, but Send doesn’t imply Sync 🙂