lens-4.3.3: Lenses, Folds and Traversals

Portabilitynon-portable
Stabilityprovisional
MaintainerEdward Kmett <ekmett@gmail.com>
Safe HaskellTrustworthy

Control.Lens.Empty

Description

 

Documentation

class AsEmpty a whereSource

Methods

_Empty :: Prism' a ()Source

>>> isn't _Empty [1,2,3]
True