count()

template<concepts::product_type T>

std::size_t kumi::count ( T && ts )

inlinenodiscardconstexprnoexcept

Counts the number of elements of t not equivalent to false.

Parameters

ts	Value to process

Returns

Number of elements not equivalent to false.

Example:

#include <kumi/kumi.hpp>
#include <iostream>
#include <type_traits>
 
int main()
{
  auto t = kumi::tuple{1, 0, 2., nullptr, 3.f, false, 'z'};
  std::cout << std::boolalpha << kumi::count(t ) << "\n";
}

#include <kumi/kumi.hpp>
#include <iostream>
#include <type_traits>
 
int main()
{
  using namespace kumi::literals;
  auto t = kumi::record{"a"_id = 1, "b"_id = 0, "c"_id = 2., "d"_id = nullptr
                      , "e"_id = 3.f, "f"_id = false, "g"_id = 'z'};
  std::cout << std::boolalpha << kumi::count(t ) << "\n";
}