On Jan 9, 2006, at 12:53 PM, Victor Reyes wrote: > I have two arrays of different sizes. > Right now via find_all I can find all the elements that are common > to both > arrays. > All the elements in the smaller arrays can be found in the larger > array. > > What I would like to find now is all th elements that are in the > larger > array and missing on the smaller array. > I know I can iterate and compare each element within a nested loop. > But is there a way to print out the elements that are missing from the > smaller array without having to implement a nested loop? > > Thank you > > Victor Like this? irb(main):009:0> a = [1,2,3,4,5] => [1, 2, 3, 4, 5] irb(main):010:0> b = [1,2,3] => [1, 2, 3] irb(main):011:0> a - b => [4, 5] Cheers- -Ezra