get() [3/3]

template<std::size_t I, typename... Ts>

decltype(auto) constexpr get ( record< Ts... > & r )

related

Extracts the Ith field from a kumi::record.

Note

Does not participate in overload resolution if I is not in [0, sizeof...(Ts)).

Template Parameters

I	Compile-time index of the field to access

Parameters

r	Record to index

Returns

A reference to the selected field of r.

Example:

#include <kumi/kumi.hpp>
#include <iostream>
 
int main()
{
  using namespace kumi::literals;
 
  kumi::record r = { "x"_id = 1, "y"_id = 2.3, "z"_id = 4.5f, "t"_id = '@' };
 
  std::cout << kumi::get<0>(r) << "\n";
  std::cout << kumi::get<1>(r) << "\n";
  std::cout << kumi::get<2>(r) << "\n";
 
  kumi::get<3>(r).value++;
 
  std::cout << kumi::get<3>(r) << "\n";
}