Dylan DPC e6353aac9d Rollup merge of #72626 - phimuemue:doubleendediter_doc, r=dtolnay ...

Add remark regarding DoubleEndedIterator

While reviewing https://github.com/rust-itertools/itertools/pull/442/commits/14293bd18f01b6bd4856816222f808f46603eccd#diff-2c16d2ada06ad2fd1fc754679646d471, I realized that a `DoubleEndedIterator` may yield different elements depending on whether it is traversed forwards or backwards. (Not only the *order*, but possibly also the yielded values.)

I found this remarkable, but could not find anything in the current docs, so I thought it may be worth mentioning this explicitly.

Unfortunately, I could not test these changes locally (`rustdoc` complains about `unresolved import`). Sorry if this causes headache.

If I should change something, please let me know. If it seems too trivial, feel free to just close this PR.

2020-05-27 03:09:23 +02:00

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alloc

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array

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benches

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char

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convert

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fmt

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future

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hash

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iter

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macros

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mem

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num

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ops

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prelude

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ptr

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slice

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str

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sync

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task

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tests

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unicode

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any.rs

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ascii.rs

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bool.rs

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borrow.rs

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Cargo.toml

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cell.rs

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clone.rs

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cmp.rs

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default.rs

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ffi.rs

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hint.rs

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internal_macros.rs

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intrinsics.rs

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lib.rs

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marker.rs

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option.rs

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panic.rs

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panicking.rs

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pin.rs

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primitive.rs

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raw.rs

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result.rs

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time.rs

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tuple.rs

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unit.rs

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