Add Stream::scan #192
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Add Stream::scan #192
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ghost
suggested changes
Sep 15, 2019
| where | ||
| Self: Sized, | ||
| St: Unpin, | ||
| F: Unpin + FnMut(&mut St, Self::Item) -> Option<B>, |
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We don't need St nor F to be Unpin because we're never pinning them.
ghost
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Sep 15, 2019
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Thanks! bors r+ |
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192: Add Stream::scan r=stjepang a=tirr-c Ref #129. The mapper function `f` is synchronous and returns bare `Option<B>`. Asynchronous `f` seems tricky to implement right. It requires the wrapper to be self-referential, as a reference to internal state may be captured by the returned future. Co-authored-by: Wonwoo Choi <chwo9843@gmail.com>
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Ref #129. The mapper function
fis synchronous and returns bareOption<B>.Asynchronous
fseems tricky to implement right. It requires the wrapper to be self-referential, as a reference to internal state may be captured by the returned future.