{-# LANGUAGE CPP #-} ----------------------------------------------------------------------------- -- | -- Module : Control.Lens -- Copyright : (C) 2012-15 Edward Kmett -- License : BSD-style (see the file LICENSE) -- Maintainer : Edward Kmett <ekmett@gmail.com> -- Stability : experimental -- Portability : non-portable -- -- Usage: -- -- You can derive lenses automatically for many data types: -- -- @ -- import Control.Lens -- -- data FooBar a -- = Foo { _x :: ['Int'], _y :: a } -- | Bar { _x :: ['Int'] } -- 'makeLenses' ''FooBar -- @ -- -- This defines the following lenses: -- -- @ -- x :: 'Lens'' (FooBar a) ['Int'] -- y :: 'Traversal' (FooBar a) (FooBar b) a b -- @ -- -- You can then access the value of @_x@ with ('^.'), the value of @_y@ – -- with ('^?') or ('^?!') (since it can fail), set the values with ('.~'), -- modify them with ('%~'), and use almost any other combinator that is -- re-exported here on those fields. -- -- The combinators here have unusually specific type signatures, so for -- particularly tricky ones, the simpler type signatures you might want to -- pretend the combinators have are specified as well. -- -- More information on how to use lenses is available on the lens wiki: -- -- <http://github.com/ekmett/lens/wiki> -- -- <<Hierarchy.png>> ---------------------------------------------------------------------------- module Control.Lens ( module Control.Lens.At , module Control.Lens.Cons , module Control.Lens.Each , module Control.Lens.Empty , module Control.Lens.Equality , module Control.Lens.Fold , module Control.Lens.Getter , module Control.Lens.Indexed , module Control.Lens.Iso , module Control.Lens.Lens , module Control.Lens.Level , module Control.Lens.Plated , module Control.Lens.Prism , module Control.Lens.Reified , module Control.Lens.Review , module Control.Lens.Setter #ifndef DISABLE_TEMPLATE_HASKELL , module Control.Lens.TH #endif , module Control.Lens.Traversal , module Control.Lens.Tuple , module Control.Lens.Type , module Control.Lens.Wrapped , module Control.Lens.Zoom ) where import Control.Lens.At import Control.Lens.Cons import Control.Lens.Each import Control.Lens.Empty import Control.Lens.Equality import Control.Lens.Fold import Control.Lens.Getter import Control.Lens.Indexed import Control.Lens.Iso import Control.Lens.Lens import Control.Lens.Level import Control.Lens.Plated import Control.Lens.Prism import Control.Lens.Reified import Control.Lens.Review import Control.Lens.Setter #ifndef DISABLE_TEMPLATE_HASKELL import Control.Lens.TH #endif import Control.Lens.Traversal import Control.Lens.Tuple import Control.Lens.Type import Control.Lens.Wrapped import Control.Lens.Zoom #ifdef HLINT {-# ANN module "HLint: ignore Use import/export shortcut" #-} #endif