mapfilter
Have you ever mapped a list, then filtered it? Or filtered first, then mapped? Why not do it all in one pass with mapfilter? mapfilter? mapfilter is a function that combines the traditional map & filter of functional programming by using the...
<br /><br />Excerpt from <a href="http://streamhacker.wordpress.com/2009/03/03/mapfilter/">Stream Hacker</a>