def hello
  case () do "hello, world!" end
  case ("jared") do "hello jj" end
  case (name) where String.is?(name) do "hello, ${ name }!" end
  case (<:name, name>) do "hello ${ String.to_uppercase(name) }!" end
  case ({ first: { name: first_name }, last: { name: last_name } }) do
    "hello, ${ first_name } ${ last_name }!"
  end
end


hello() -> "hello world!"
hello("jared") -> "hello jj"
hello(:shawn) => error
hello({ first: { name: "Shawn" }, middle: { name: "Mathew" }, last: { name: "Dellysse" }) -> "hello Shawn Dellysse!"