lens-2.9: Lenses, Folds and Traversals

Portabilityportable
Stabilityprovisional
MaintainerEdward Kmett <[email protected]>
Safe HaskellSafe-Inferred

Control.Lens.Combinators

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Synopsis

Documentation

(<$!>) :: Monad m => (a -> b) -> m a -> m bSource

A strict version of (<$>) for monads. 

>>> (+1) <$!> [1,2,3,4]
[2,3,4,5]

(<$!) :: Monad m => b -> m a -> m bSource

A strict version of (<$) for monads. 

>>> () <$! [1,2,3,4]
[(),(),(),()]