std::indirect_equivalence_relation
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Defined in header
<iterator> |
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template<class F, class I1, class I2 = I1>
concept indirect_equivalence_relation = |
(since C++20) | |
The concept indirect_equivalence_relation specifies requirements for algorithms that call equivalence relations as their arguments. The key difference between this concept and std::equivalence_relation is that it is applied to the types that I1 and I2 references, rather than I1 and I2 themselves.
Semantic requirements
F, I1, and I2 model indirect_equivalence_relation only if all concepts it subsumes are modeled.