Add make_immutability decorator

[harell]

• [Frozen instances in Python dataclasses module ] (https://docs.python.org/3/library/dataclasses.html#frozen-instances)
• makeActiveBinding
• @property built-in decorator

Car <- function(model = NA_character_, hp = NA_real_) return(
   data.frame(modek = model, hp = hp)
)


Car <- make_immutability(Car, freez = True)
car <- Car(model = "Mercedes-Benz S-Class", hp = 180)
car$hp <- 200 # fails because object is immutable

[harell]

Why use make_immutability()?

• User-facing: behaves like data structures
• Developer-facing: give control of access

Use cases:

• ValueObject