werewolf-1.0.2.2: A game engine for playing werewolf within an arbitrary chat client

Copyright(c) Henry J. Wylde, 2016
LicenseBSD3
Maintainerpublic@hjwylde.com
Safe HaskellNone
LanguageHaskell2010

Control.Lens.Extra

Contents

Description

Extra utility functions for working with lenses.

Synopsis

Folds

is :: Getting Any s a -> s -> Bool Source

The counter-part to isn't, but more general as it takes a Getting instead.

is = has

isn't :: Getting All s a -> s -> Bool Source

A re-write of isn't to be more general by taking a Getting instead.

isn't = hasn't

Traversals

filteredBy :: Eq b => Lens' a b -> b -> Traversal' a a Source

A companion to filtered that, rather than using a predicate, filters on the given lens for matches.