select_index_sequence

template<bool... Bs>

using kumi::function::select_index_sequence

#include <kumi/functional/set.hpp>

Initial value:

 
decltype(kumi_implementation_defined)

A helper alias template generating the positions of the true flags in a pack of booleans.

Header file

#include <kumi/functional/set.hpp>

Call Signature

template<bool... Bs>
using select_index_sequence;

Template Parameters

• Bs: Compile-time flags, one per input element, set to true when the element is selected

Return value

A std::index_sequence containing, in increasing order, the positions of the true flags. For Bs = <true, false, true, true>, the result is std::index_sequence<0, 2, 3>.