for_each_index

for_each_index_t kumi::for_each_index {}

inlineconstexpr

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

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 an integral constant. This function cannot be applied on record 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_index(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

kumi::for_each_field

Examples

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