Sorting in Haskell
Haskell’s Data.List
module provides sorting functionality for lists. We’ll look at sorting for built-in types first.
When you run this program, you’ll see:
In this Haskell version:
We use the
sort
function fromData.List
to sort lists of anyOrd
type.The
sort
function works on lists of any type that implements theOrd
typeclass, which includes strings and integers.We’ve implemented a custom
isSorted
function to check if a list is already sorted, as Haskell’s standard library doesn’t provide this functionality out of the box.Haskell’s type system ensures that we can only sort lists of comparable types, similar to Go’s generic constraints.
The output is formatted similarly to the original example, showing the sorted lists and whether the final list is sorted.
This example demonstrates Haskell’s powerful type system and its built-in support for working with lists. The sort
function is polymorphic, working on any list of Ord
elements, which is similar to Go’s generic sorting functions.