# take the first n objects from a list take = (n, [x, ...xs]:list) --> | n <= 0 => [] | empty list => [] | otherwise => [x] ++ take n - 1, xs take 2, [1, 2, 3, 4, 5] # Curried functions take-three = take 3 take-three [6, 7, 8, 9, 10] # Function composition last-three = reverse >> take-three >> reverse last-three [1 to 8] # List comprehensions and piping t1 = * id: 1 name: 'george' * id: 2 name: 'mike' * id: 3 name: 'donald' t2 = * id: 2 age: 21 * id: 1 age: 20 * id: 3 age: 26 [{id:id1, name, age} for {id:id1, name} in t1 for {id:id2, age} in t2 where id1 is id2] |> sort-by \id |> JSON.stringify