Provide @immutable attribute for first-class citizens and namespaces?

[Daniel Fitzpatrick]

On Saturday, 14 April 2012 at 17:50:01 UTC, Daniel Fitzpatrick 
wrote:
>> « immutable: » can't do the trick ?
>
> Do you mean to extend the immutable keyword instead of adding 
> an attribute, or that the immutable keyword, as is, is enough?  
> I'm fine with the former.  The latter is problematic.  Think 
> turnabout - would you enjoy having to mark all of your 
> variables 'mutable' when you wanted them like that?  As it is, 
> that would add a ton of declarations to the standard library.
>
>
>> BTW, this proposal is a bit problematic without a mutable 
>> keyword.
>
> I thought about this: I wouldn't be interested in it.  I would 
> be interested in a library which provided containers with 
> different semantics for atomic mutation.  What Clojure provides 
> is pretty spot on:
>
> http://clojure.org/refs
> http://clojure.org/agents
> http://clojure.org/atoms

Okay...yes.

I hadn't thought about using attributes in that way.  Maybe this 
is a nonissue.  :)