From: Kurt Stephens <ks@...>
Date: 2009-12-02T08:42:41+09:00
Subject: [ruby-core:26987] Re: Caching #to_s for immutables (and a 	possible future for constant-folding) [with patch v2]

Nikolai Weibull wrote:
> On Tue, Dec 1, 2009 at 18:19, Yusuke ENDOH <mame@tsg.ne.jp> wrote:
> 
>> How about if #to_s returns, instead of a frozen String itself, a mutable
>> String that is duplicated from the cached frozen String?
> 
> Couldn���t one delay duplication until mutation?
> 
If Ruby passed arguments by name, not value... :).