Back to Course The Tapastry 0% Complete 0/0 Steps Search (Entire Site)Search The Tapastry 2013 Array Set Operations Module 2, Topic 119 In Progress ← Previous Next→ Array Set Operations Module Progress 0% Complete Sometimes we'd like to treat Ruby arrays like sets, in which each item is unique. Today's dish shows how! Oop, this content isn't available to visitors. Please register or log in to continue! Responses You must be logged in to post a comment.