:: (a -> a -> Ordering) -> [a] -> a package:base

maximumBy :: Foldable t => (a -> a -> Ordering) -> t a -> a
base Data.List Data.Foldable
The largest element of a non-empty structure with respect to the given comparison function. Structure order is used as a tie-breaker: if there are multiple largest elements, the rightmost of them is chosen.

Examples

Basic usage: 
>>> maximumBy (compare `on` length) ["Hello", "World", "!", "Longest", "bar"]
"Longest"
WARNING: This function is partial for possibly-empty structures like lists.
minimumBy :: Foldable t => (a -> a -> Ordering) -> t a -> a
base Data.List Data.Foldable
The least element of a non-empty structure with respect to the given comparison function. Structure order is used as a tie-breaker: if there are multiple least elements, the leftmost of them is chosen.

Examples

Basic usage: 
>>> minimumBy (compare `on` length) ["Hello", "World", "!", "Longest", "bar"]
"!"
WARNING: This function is partial for possibly-empty structures like lists.
maximumBy :: Foldable1 t => (a -> a -> Ordering) -> t a -> a
base Data.Foldable1
The largest element of a non-empty structure with respect to the given comparison function. Structure order is used as a tie-breaker: if there are multiple largest elements, the rightmost of them is chosen.
minimumBy :: Foldable1 t => (a -> a -> Ordering) -> t a -> a
base Data.Foldable1
The least element of a non-empty structure with respect to the given comparison function. Structure order is used as a tie-breaker: if there are multiple least elements, the leftmost of them is chosen.