for_each

for_each_t kumi::for_each {}

inlineconstexpr

Callable object applying the Callable object f on each element of a product type.

f is applied on the values if the given product_type is a record type.

Note

This function does not take part in overload resolution if f can't be applied to the elements of t and/or ts, or if the product type are not compatible.

See also

compatible_product_types.

Header file

#include <kumi/algorithm/for_each.hpp>

Call Signature

template<typename Function, product_type T, product_type... Ts>
constexpr decltype(auto) for_each(Function && f, T && t, Ts &&... ts);

Parameters

• f: Callable object to be invoked
• t: Product Type whose elements are used as arguments to f
• ts: Other product types whose elements are used as arguments to f

See also

kumi::for_each_index

kumi::for_each_field

Examples

Tuple

#include <kumi/kumi.hpp>
#include <iostream>
 
int main()
{
  auto t = kumi::tuple{ 1, 2.3, 0.43f };
 
  kumi::for_each( [](auto& m) { m *= 10; }
                , t
                );
 
  std::cout << t << "\n";
}

Record

#include <kumi/kumi.hpp>
#include <iostream>
 
int main()
{
  using namespace kumi::literals;
 
  auto t = kumi::record{ "a"_id = 1, "b"_id = 2.3, "c"_id = 0.43f };
 
  kumi::for_each( [](auto& m) { m *= 10; }
                , t
                );
 
  std::cout << t << "\n";
}