Implement ranges::rotate and ranges::rotate_copy #1073
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CaseyCarter
requested changes
Jul 23, 2020
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Urgh, from all the algorithms where I would not want to reduce an ICE out from rotate is high in the list |
I've got this fixed, just typing up a commit message. |
* Unqualify calls to `_Reverse_common`, which cannot be confused with a `_Meow_unchecked` function in `_STD`. * In `_Rotate_unchecked`: * Name the iterator value that's equal to the sentinel `_Final` instead of `_End` which has become conventional. * Avoid making an extra traversal ahead-of-time to find the final iterator of non-bidi ranges. * When we do need to find the final iterator value, start any traversal at `_Mid` instead of `_First`. * Let's not overload "sentinel" - which has enough meanings in Ranges - for `_Reverse_until_sentinel_unchecked`. * Don't test `constexpr rotate` at all with MSVC: it's extremely sensitive to VSO-938163. * Remove unnecessary bug workarounds from the `rotate_copy` test.
Correction: I had this fixed, and somehow managed to break it again while typing a commit message. |
CaseyCarter
approved these changes
Jul 28, 2020
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StephanTLavavej
changed the title
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"That's obviously a rotate." -- Sean Parent |
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I have been rotating to implement these algorithms but ended up with an ICE in my hand.