#include <filterfalse.hpp>

#include <vector>

#include <iostream>

bool greater_than_four(int i) {

return i > 4;

}

int main() {

std::vector<int> ns{1, 5, 6, 0, 7, 2, 3, 8, 3, 0, 2, 1};

std::cout << "ns = { ";

for (auto&& i : ns) {

std::cout << i << ' ';

}

std::cout << "}\n";

// like filter() but only shows elements that are false under the predicate

std::cout << "Greater than 4\n";

for (auto&& i : iter::filterfalse(greater_than_four, ns)) {

std::cout << i << '\n';

}

// single argument version only shows falsey values

std::cout << "filterfalse(ns):\n";

for (auto&& i : iter::filterfalse(ns)) {

std::cout << i << '\n';

}

}