Boost.Hana  1.4.0 Your standard library for metaprogramming
extract.hpp File Reference

Forward declares boost::hana::extract. More...

## Namespaces

boost::hana
Namespace containing everything in the library.

## Variables

constexpr auto boost::hana::extract
Extract a value in a given comonadic context.Given a value inside a comonadic context, extract it from that context, performing whatever effects are mandated by that context. This can be seen as the dual operation to the lift method of the Applicative concept. More...

## Detailed Description

Forward declares boost::hana::extract.