See jsfiddle here: http://jsfiddle.net/Ln9xc/2/

Underscore.js behaves like so:

_([1,2,3,4]).find(function(i) { return i === 5 }); // returns undefined

While Lo-Dash returns the entire list if it can't find a match:

_([1,2,3,4]).find(function(i) { return i === 5 }); // returns [1,2,3,4]

This was unexpected for me. If this is desired behavior, perhaps add a note?