Expandos

def player = new Expando()
player.name = "Fátima"
player.surname = "Casaú"
player.bornDate = new Date("10/03/1985")
player.age = {  (new Date() - bornDate)/365 as Integer }

println player
println player.name
println player.surname
println player.bornDate
println player.age()

def map = [name:"fatima",bornDate: new Date("10/03/1985")]
map.age = {  (new Date() - map.bornDate)/365 as Integer }

println map
println map.name
println map.bornDate
println map.age()