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std::experimental::ranges::IndirectRelation

来自cppreference.com
< cpp‎ | experimental‎ | ranges
 
 
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定义于头文件 <experimental/ranges/iterator>
template < class F, class I1, class I2 = I1 >

concept bool IndirectRelation =
  ranges::Readable<I1> && ranges::Readable<I2> &&
  ranges::CopyConstructible<F> &&
  ranges::Relation<F&, ranges::value_type_t<I1>&, ranges::value_type_t<I2>&> &&
  ranges::Relation<F&, ranges::value_type_t<I1>&, ranges::reference_t<I2>> &&
  ranges::Relation<F&, ranges::reference_t<I1>, ranges::value_type_t<I2>&> &&
  ranges::Relation<F&, ranges::reference_t<I1>, ranges::reference_t<I2>> &&
  ranges::Relation<
    F&, ranges::iter_common_reference_t<I1>, ranges::iter_common_reference_t<I2>

  >;
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