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iota_view<W,Bound>'s sentinel and iterator do no satisfy SizedSentinel when SizedSentinel<Bound,I> is satisfied #613

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ericniebler opened this issue Jan 30, 2019 · 2 comments
Open

iota_view<W,Bound>'s sentinel and iterator do no satisfy SizedSentinel when SizedSentinel<Bound,I> is satisfied #613

ericniebler opened this issue Jan 30, 2019 · 2 comments
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C++20 enhancement needs wording new P2

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@ericniebler
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Perhaps define something like a differenceable concept -- or just used SizedSentinel directly -- and use it to define an operator- friend function in class iota_view::sentinel.
@ericniebler
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Fixed by p1522.

@frederick-vs-ja
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frederick-vs-ja commented Oct 1, 2021 •
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Currently operator-s for iterator/sentinel types of iota_view<I1, I2>, where I1 and I2 are different integer types, are not enabled.
Should we also enable these operator-s to improve consistency with iota_view::size?

I've tried to submit an LWG issue (LWG3609) for this. What do you think about it?

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@ericniebler @frederick-vs-ja