find_if

Interface

template<typename InputIterator, typename Predicate>
inline SPROUT_CONSTEXPR InputIterator
find_if(InputIterator first, InputIterator last, Predicate pred);

Returns

The first iterator i in the range [first,last) for which the following corresponding conditions hold: pred(*i).

Returns last if no such iterator is found.

Examples

#include <sprout/algorithm/find_if.hpp>
#include <sprout/array.hpp>
#include <sprout/container.hpp>
#include <sprout/functional.hpp>
using namespace sprout;

SPROUT_STATIC_CONSTEXPR auto input = array<int, 10>{{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}};
SPROUT_STATIC_CONSTEXPR auto result = sprout::find_if(begin(input), end(input), bind2nd(greater<>(), 7));
static_assert(result != end(input), "found a element greater than 7 from input.");
static_assert(*result == 8, "a found iterator is pointing to 8.");

Complexity

At most last - first applications of the predicate.

Recursive function invocations in O(logN) (logarithmic) depth.

Header

sprout/algorithm/find_if.hpp

Convenience header: sprout/algorithm.hpp