reverse()

template<concepts::product_type T>

auto kumi::reverse ( T && t )

inlinenodiscardconstexpr

Reverse elements of a product type.

On record types, this function operates on elements as if they were ordered. The considered order is the order of declaration.

Parameters

t	The product type to reverse

Returns

A product type with the type of t and elements equal to (t[index<size_v<T> - 1 - Idx>]...);

Helper type

namespace kumi::result
{
  template<product_type T> struct reverse;
 
  template<product_type T>
  using reverse_t = typename reverse<T>::type;
}

Computes the return type of a call to kumi::reverse

Examples:

Tuple:

#include <kumi/kumi.hpp>
#include <iostream>
 
int main()
{
  auto values = kumi::tuple { 1, 'a', 0.1 };
 
  std::cout << values << "\n";
  std::cout << kumi::reverse(values) << "\n";
}

Record:

#include <kumi/kumi.hpp>
#include <iostream>
 
int main()
{
  using namespace kumi::literals;
 
  auto values = kumi::record { "a"_id = 1, "b"_id = 'a', "c"_id = 0.1 };
 
  std::cout << values << "\n";
  std::cout << kumi::reverse(values) << "\n";
}