@hackage / optics-operators

A tiny package containing operators missing from the official package.

Latest0.1.0.1

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Last updated 12 Sep 2023, by qwbarch
License MIT
Categories Lenses
Maintained by: qwbarch <qwbarch@gmail.com>
Lottery factor: 0

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A tiny package containing operators missing from the official package. Basic example using state operators:

newtype Person = Person { age :: Int } deriving (Show, Generic)

main :: IO ()
main = print <=< flip execStateT (Person 0) $ do
  #age += 50
  #age -= 20

-- Output: Person {age = 30}