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implement FusedIterator #152

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bluss opened this issue Sep 23, 2016 · 2 comments
Open

implement FusedIterator #152

bluss opened this issue Sep 23, 2016 · 2 comments

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@bluss
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bluss commented Sep 23, 2016

Ideally when it's stable, but we can have a crate feature until then
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bluss commented Apr 5, 2017

Still not stable

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bluss commented Nov 24, 2018

Stable in Rust 1.26

@aobatact aobatact mentioned this issue May 26, 2021
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bors bot added a commit that referenced this issue Jun 8, 2021
@bors @aobatact
Merge #550
eedea19 
550: Add More FusedIterator r=jswrenn a=aobatact

These Iterator is fused if the underlying Iterator is fused.
-  `FilterOk`
-  `FilterMapOk`
- `InterleaveShortest`
- `KMergeBy`
- `MergeBy`
- `PadUsing`
- `Positions`
- `Product` 
- `RcIter`
- `TupleWindows`
- `Unique`
- `UniqueBy`
-  `Update`
- `WhileSome`

These is fused even though the underlying Iterator is not fused.
- `Combinations` 
- `CombinationsWithReplacement`
- `Powerset`
- `RepeatN`
- `WithPosition` 

`FusedIterator` can be added to these structs.

Related  #55, #152, #531, #533

I separate the pull request with #548 because these Iterator are sure to be fused because it was documented, but I'm not 100% sure that the structs in this PR is actually fused. (Though I believe it is.)

Co-authored-by: aobatact <aobatact144@gmail.com>
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@bluss