How to convert [ 1, 2, 3] to {1, 2, 3} I want to convert elements of a vector/array to become elements of a set. How can I do that? Eg: change [[1,2],[2,3][2,4]] to {[1,2],[2,3],[2,4]} Thank you for any answers. Source: How to convert [ 1, 2, 3] to {1, 2, 3}