Javari's Reference Immutability

[Hasan Aljudy]

Regan Heath wrote:
> On Thu, 27 Jul 2006 18:39:29 -0600, Hasan Aljudy 
> <hasan.aljudy at gmail.com>  wrote:
> 
>> You say that Java's String class implies alot of copying, therefor 
>> it's  bad. However, you fail to realize that copying when modifying is 
>> exactly  what COW stands for. COW is a kind of honor-system protocol 
>> implemented  by phobos. Everytime phobos thinks it needs to modify a 
>> string which it  doesn't own, it makes a copy first to keep the 
>> original string intact.  In Java, this can be done by creating a 
>> StringBuffer from the String  (which creates a copy), after that, any 
>> modification you make to  StringBuffer happens in-place; no needless 
>> copying.
> 
> 
> Sure. But are you trying to tell me that this..
> 
> String foo(String a) { .. return modified a .. }
> String bar(String a) { .. return modified a .. }
> String baz(String a) { .. return modified a .. }
> String bob(String a) { .. return modified a .. }
> 
> String s = foo(bar(baz(bob("test"))));
> 
> Will result in _no_ needless copying?
> 
> Regan

Same thing will happen will happen with phobos COW

P.S. Are you (or Reiner Pope) saying that Javari provides a better 
solution to this? <g>