split()

template<std::size_t I0, product_type Tuple>
requires (I0 <= size_v<Tuple>)

constexpr auto kumi::split ( Tuple &&  t, index_t< I0 >  i0  )

inlineconstexprnoexcept

Split a tuple into two.

Split a kumi::tuple in two kumi::tuple containing all the elements before and after a given index.

Note

Does not participate in overload resolution if I0 is not in [0, sizeof...(Ts)[.

Parameters

t	Tuple to split.
i0	Compile-time index of the split pivot.

Returns

A new kumi::tuple containing the two sub-tuple cut at index I.

Helper type

namespace kumi::result
{
  template<product_type Tuple, std::size_t I0> struct split;
 
  template<product_type Tuple, std::size_t I0>
  using split_t = typename split<Tuple,I0>::type;
}

Computes the type returned by a call to split.

Examples:

 
#include <kumi/kumi.hpp>
#include <iostream>
 
int main()
{
  using namespace kumi::literals;
 
  kumi::tuple a = { 1, 2.3, 4.5f,'6',"7", short{89} };
 
  auto[first, second] = split(a, 3_c);
 
  std::cout << a      << "\n";
  std::cout << first  << "\n";
  std::cout << second << "\n";
}

 
#include <kumi/kumi.hpp>
#include <iostream>
 
int main()
{
  using namespace kumi::literals;
 
  kumi::record a = { "a"_f = 1, "b"_f = 2.3, "c"_f = 4.5f,"d"_f = '6',
                     "e"_f = "7", "f"_f = short{89} };
 
  auto[first, second] = split(a, 3_c);
 
  std::cout << a      << "\n";
  std::cout << first  << "\n";
  std::cout << second << "\n";
}