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[range.cartesian.view] Fix cartesian-product-is-common #5768

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[range.cartesian.view] Fix cartesian-product-is-common #5768

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1f1bdfa
[range.cartesian.view] Simplify cartesian-product-is-common
hewillk Aug 22, 2022
11a2d2c
[range.cartesian.view] Fix cartesian-product-is-common
hewillk Aug 22, 2022
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13 changes: 6 additions & 7 deletions source/ranges.tex
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Original file line number Diff line number Diff line change
Expand Up @@ -14286,10 +14286,9 @@
(@\libconcept{bidirectional_range}@<@\exposid{maybe-const}@<Const, Vs>>
&& @\exposconcept{cartesian-product-common-arg}@<@\exposid{maybe-const}@<Const, Vs>>));

template<class First, class... Vs>
template<class First>
concept @\defexposconcept{cartesian-product-is-common}@ = // \expos
(@\exposconcept{cartesian-product-common-arg}@<First> && ... &&
@\exposconcept{cartesian-product-common-arg}@<Vs>);
@\exposconcept{cartesian-product-common-arg}@<First>;

template<class... Vs>
concept @\defexposconcept{cartesian-product-is-sized}@ = // \expos
Expand Down Expand Up @@ -14330,9 +14329,9 @@

constexpr @\exposid{iterator}@<false> end()
requires ((!@\exposconcept{simple-view}@<First> || ... || !@\exposconcept{simple-view}@<Vs>) &&
@\exposconcept{cartesian-product-is-common}@<First, Vs...>);
@\exposconcept{cartesian-product-is-common}@<First>);
constexpr @\exposid{iterator}@<true> end() const
requires @\exposconcept{cartesian-product-is-common}@<const First, const Vs...>;
requires @\exposconcept{cartesian-product-is-common}@<const First>;
constexpr default_sentinel_t end() const noexcept;

constexpr @\seebelow@ size()
Expand Down Expand Up @@ -14384,9 +14383,9 @@
\begin{itemdecl}
constexpr @\exposid{iterator}@<false> end()
requires ((!@\exposconcept{simple-view}@<First> || ... || !@\exposconcept{simple-view}@<Vs>)
&& @\exposconcept{cartesian-product-is-common}@<First, Vs...>);
&& @\exposconcept{cartesian-product-is-common}@<First>);
constexpr @\exposid{iterator}@<true> end() const
requires @\exposconcept{cartesian-product-is-common}@<const First, const Vs...>;
requires @\exposconcept{cartesian-product-is-common}@<const First>;
\end{itemdecl}

\begin{itemdescr}
Expand Down