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Rollup merge of #61981 - rust-lang:generators-clone-doc, r=cramertj

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Closures implement Copy and Clone, generators don't
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Mazdak Farrokhzad 2019-06-20 22:14:26 +02:00 • committed by GitHub
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src/doc/unstable-book/src/language-features/generators.md
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@ -146,7 +146,7 @@ closure-like semantics. Namely:
generators also depend on variables live across suspension points. This means
that although the ambient environment may be `Send` or `Sync`, the generator
itself may not be due to internal variables live across `yield` points being
not-`Send` or not-`Sync`. Note that generators, like closures, do
not-`Send` or not-`Sync`. Note that generators do
not implement traits like `Copy` or `Clone` automatically.
* Whenever a generator is dropped it will drop all captured environment