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      std::indirectly_comparable

      From cppreference.com
      <cpp‎ |iterator
       
       
      Iterator library
      Iterator concepts
      Iterator primitives
      Algorithm concepts and utilities
      Indirect callable concepts
      Common algorithm requirements
      indirectly_comparable
      (C++20)
      (C++20)
      (C++20)
      (C++20)
      Utilities
      (C++20)
      Iterator adaptors
      Range access
      (C++11)(C++14)
      (C++14)(C++14)  
      (C++11)(C++14)
      (C++14)(C++14)  
      (C++17)(C++20)
      (C++17)
      (C++17)
       
      Defined in header<iterator>
      template<class I1,class I2,class Comp,

               class Proj1=std::identity,class Proj2=std::identity>
      concept indirectly_comparable=

         std::indirect_binary_predicate<Comp, std::projected<I1, Proj1>, std::projected<I2, Proj2>>;
      (since C++20)

      The conceptindirectly_comparable specifies the fundamental algorithm requirement for comparing values across two independent ranges.

      [edit]Semantic requirements

      indirectly_comparable is modeled only if all concepts it subsumes are modeled.

      [edit]See also

      specifies that a callable type, when invoked with the result of dereferencing twoindirectly_readable types, satisfiespredicate
      (concept)[edit]
      Retrieved from "https://en.cppreference.com/mwiki/index.php?title=cpp/iterator/indirectly_comparable&oldid=134044"

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