for_each_field()

template<typename Function , record_type Tuple, record_type... Tuples>
requires ( compatible_product_types<std::remove_cvref_t<Tuple>, std::remove_cvref_t<Tuples>...> )

constexpr void kumi::for_each_field ( Function  f, Tuple &&  t, Tuples &&...  ts  )

inlineconstexpr

Applies the Callable object f on each element of a kumi::record_type and its field.

Note

This function does not take part in overload resolution if f can't be applied to the elements of t and/or ts and a kumi::field_capture.

Parameters

f	Callable object to be invoked
t	kumi::record_type whose elements to be used as arguments to f
ts	Other kumi::record_type whose elements to be used as arguments to f

See also

kumi::for_each

Example

 
#include <kumi/kumi.hpp>
#include <string_view>
#include <iostream>
 
int main()
{
  using namespace kumi::literals;
    
  auto t = kumi::record{"a"_f = 1, "b"_f = 2.3, "c"_f = 0.43f };
 
  kumi::for_each_field( [](kumi::str name, auto& m) 
  {
    if(name.as<std::string_view>().ends_with("a"))
      m += 10;
    else if (name == "c")
      m = (m * 100) -1; 
    else
      m *= 10;
    }
    , t
  );
 
  std::cout << t << "\n";
}