I like function chaining more. E.g. Elixir's `Map.set(map, field, value)` function combined with the `|>` operator, which feeds the value from the previous operation in to the function as the first argument:

    person_map
    |> Map.set(:name, "Peter")
    |> Map.set(:age, 37)
    |> Map.set(:married, true)

It's so much fun to look at a chain of generic functions working on a generic data structure, while keeping the code clear. Makes me feel all warm inside. Immutability and functional programming, ain't it nice, huh?