Boost.Hana: boost/hana/fwd/extract.hpp File Reference

| Boost.Hana 1.0.0 Your standard library for metaprogramming |

Namespaces | Variables
extract.hpp File Reference

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

## Namespaces
| boost
| 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`.

Copyright
  Louis Dionne 2013-2016 Distributed under the Boost Software License, Version 1.0. (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)