APIs and LibrariesPremium EpisodesS2 Premium Episode #044: #one? Avdi Grimm January 9, 2013 0 Comments Somtetimes you need to know if exactly one element in a collection has a given property. For that situation, we have the #one? predicate method. This page is just for members. Sign in or subscribe to gain access! Username Password Remember Me Forgot Password Related CategoriesAPIs and Libraries, Premium Episodes, S2 PremiumTagscontainers, corelib, Enumerable & Enumerator
