cxxomfort-examples/examples/algorithm_constexpr.cpp

#include <cxxomfort/cxxomfort.hpp>
#include <cxxomfort/algorithm.hpp> // hash
#include <cxxomfort/iterator.hpp>
#include <cxxomfort/array.hpp>
#include <iostream>

constexpr cxxomfort::array<int,8> nums = { {4, -7, 1, 8, -2, -3, 6, 2} };
constexpr bool is_pos (int x) noexcept { return x > 0; }

int main () {
	using namespace std;
	using cxxomfort::constexpr_tag;
	constexpr unsigned positives = cxxomfort::fix::count_if( constexpr_tag
	, nums.cbegin(), nums.cend(), is_pos);
	static_assert( positives == 5, "positives");
	constexpr int const * pf = cxxomfort::fix::find( constexpr_tag
	, nums.cbegin(), nums.cend(), 8 );
	static_assert( pf == nums.cbegin()+3, "find");
	
}