ToolShed.Data.Foldable

AUTHOR

Dr. Alistair Ward

DESCRIPTION

Miscellaneous polymorphic operations on Foldable types.

Functions

gather :: (Foldable f, Ord a) => f a -> [[a]]

A specific instance of gatherBy.

gatherBy :: (Foldable f, Ord b) => (a -> b) -> f a -> [[a]]

• Group equal (though not necessarily adjacent; c.f. groupBy) elements, according to the specified comparator.
• The groups are returned in ascending order, whilst their elements remain in their original order.

Predicates

hasDuplicates :: (Foldable f, Ord a) => f a -> Bool

Whether the specified collection contains any equal items.