Boost.Hana  1.5.0 Your standard library for metaprogramming
none.hpp File Reference

Forward declares boost::hana::none. More...

## Namespaces

boost::hana
Namespace containing everything in the library.

## Variables

constexpr auto boost::hana::none
Returns whether all of the keys of the structure are false-valued.The keys of the structure must be Logicals. If the structure is not finite, a true-valued key must appear at a finite "index" in order for this method to finish. More...

## Detailed Description

Forward declares boost::hana::none.