gistfile1.txt

Inimino’s way:
foo = routine {
  if argument == 1, return ‘a’
  if argument == 2, return ‘b’
  if argument == 3, return ‘c’
}

“now I want to change the result of looking up 2, such that it returns ‘CHANGED’. I have to write an entirely new
 routine, with exactly the same contents for all the other elements, but a new return value for 2:”
foo = routine {
 if argument == 1, return ‘a’
 if argument == 2, return ‘CHANGED’
 if argument == 3, return ‘c’
}


My way:
foo = (
  1: a
  2: b
  3: c
)

“now I want to change the result of looking up 2, such that it returns ‘CHANGED’. I only have to change the
 *data* stored for `2`”

foo set(2, ‘CHANGED’)