std::indirect_binary_predicate

< cpp‎ | iterator
Defined in header <iterator>
(since C++20)

The concept indirect_binary_predicate specifies requirements for algorithms that call binary predicates as their arguments. The key difference between this concept and std::predicate 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_binary_predicate only if all concepts it subsumes are modeled.