ArraysortedUniqOn this pagesortedUniq_.sortedUniq(array) # Ⓢ [Ⓣ][1] Ⓝ This method is like _.uniq except that it's designed and optimized for sorted arrays. Since 4.0.0 Arguments array (Array): The array to inspect. Returns (Array): Returns the new duplicate free array. Example _.sortedUniq([1, 1, 2]);// => [1, 2]