Portability	portable
Stability	provisional
Maintainer	Edward Kmett <ekmett@gmail.com>
Safe Haskell	None

Control.Lens.Extras

Description

A few extra names that didn't make it into Control.Lens.

Synopsis

Documentation

is :: APrism s t a b -> s -> Bool Source

Check to see if this Prism matches.

>>> is _Left (Right 12)
False

>>> is hex "3f79"
True