Decorate-sort-undecorate idiom: Difference between revisions

=={{header|Haskell}}==

Haskell's standard sortOn is an implementation of this idiom.

<syntaxhighlight lang="haskell">import Data.List (sortOn)

main :: IO ()

main =

mapM_ print $

sortOn

snd

[ ("Rosetta", 7),

("Code", 4),

("is", 2),

("a", 1),

("programming", 11),

("chrestomathy", 12),

("site", 4)

]</syntaxhighlight>

{{Out}}

<pre>("a",1)

("is",2)

("Code",4)

("site",4)

("Rosetta",7)

("programming",11)

("chrestomathy",12)</pre>