Range-v3
Range algorithms, views, and actions for the Standard Library
count_if.hpp File Reference

Functions

template<typename I , typename S , typename R , typename P = identity>
requires input_iterator< I > &&sentinel_for< S, I > &&indirect_unary_predicate< R, projected< I, P > > iter_difference_t< I > ranges::count_if (I first, S last, R pred, P proj=P{})
 function template count_if
 
template<typename Rng , typename R , typename P = identity>
requires input_range< Rng > &&indirect_unary_predicate< R, projected< iterator_t< Rng >, P > > iter_difference_t< iterator_t< Rng > > ranges::count_if (Rng &&rng, R pred, P proj=P{})
 This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.