NAME¶

std::indirectly_comparable - std::indirectly_comparable

Synopsis¶

Defined in header <iterator>
template< class I1, class I2, class Comp,

class Proj1 = std::identity, class Proj2 = std::identity >
concept indirectly_comparable = (since C++20)

std::indirect_binary_predicate<Comp, std::projected<I1, Proj1>,
std::projected<I2, Proj2>>;

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

Semantic requirements

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

See also¶

specifies that a callable type, when invoked with the
indirect_binary_predicate result of dereferencing two indirectly_readable types,
(C++20) satisfies predicate
(concept)