[REBOL] Extracting a series of duplicates
From: 3hq2w7n02::sneakemail::com at: 5-Jul-2005 6:25
I can't seem to find the right combination of functions to do this: Create a series containing the values that are repeated in another series. For example, if the first series is [1 2 2 3 4 5 5 5 6], the new series should be [2 5]. Any hints or solutions are appreciated.