Add stream::from_fn #1842
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Add stream::from_fn #1842
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taiki-e
commented
Aug 30, 2019
| /// | ||
| /// // Check to see if we've finished counting or not. | ||
| /// if count < 6 { | ||
| /// future::ready(Some(count)) |
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Unfortunately, probably the equivalent of this cannot be written by async/await at this time (from_fn is not very compatible with async / await at this time.).
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As I mentioned in #1609, I think that this actually just isn't very useful yet until we get proper support for async closures that can mutate their captures. Is there a place where you wanted to use this and found it better than the existing |
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I agreed. As far as I know, there is nothing better than unfold at this time. We should focus on functionality, not appearance. |
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Closes #1609