Add is_empty function to ExactSizeIterator
#34357
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All other types implementing a `len` functions have `is_empty` already.
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r? @brson (rust_highfive has picked a reviewer for you, use r? to override) |
| @@ -519,6 +519,31 @@ pub trait ExactSizeIterator: Iterator { | |||
| assert_eq!(upper, Some(lower)); | |||
| lower | |||
| } | |||
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| /// | |||
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rustdoc might not like this leading empty doc comment line :)
alexcrichton
added
T-libs-api
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For adding a method to many iterators we'll likely want to run this through crater to ensure that there's no unexpected fallout if we also decide to merge. |
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Didn't we see a very similar PR to this one recently (adding is_empty to ... something) and decline to add it? I don't see it by searching old pulls. |
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Maybe you mean #31877? |
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Either that or perhaps |
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The libs team discussed this during triage yesterday and the conclusion was that this is ok to merge pending a crater run |
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Travis failure looks legit. |
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Starting a crater run. |
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@brson May I push a fix for the test failure or does that interfere with the crater run? |
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@tbu- You can go ahead and push it now. There's a small window where it would have interfered. |
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@bors r+ |
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📌 Commit 7b2a03f has been approved by |
Add `is_empty` function to `ExactSizeIterator` All other types implementing a `len` functions have `is_empty` already.
All other types implementing a
lenfunctions haveis_emptyalready.