Immutable Ruby

[Trans]

I was thinking about Erlang a bit today, the fact that it's objects
are all immutable and it's usefulness to concurrency. So I began to
wonder, what would an Immutable Ruby look like?

* Would it make setter methods effectively pointless?
* Overall, would it help or hurt efficiency/speed?
* Would it ruin Ruby's elegance?
* No more #<<
* No more Symbol vs. String!!!
* Is such a thing even possible?

T.

 

[Trans]

To find out what it would be like replace every
=A0 =A0Blah.new(arg1,arg2...)
=A0 =A0 with
=A0 =A0Blah.new(arg1,arg2...).freeze

Almost. From my understanding Immutable objects can have internal
changing state as long as it is never exposed to the outside world.
For instance, memoize is a good example.

Am I right about that?

T.