From: "Bartosz Dziewoński" <matma.rex@...>
Date: 2012-09-26T05:06:37+09:00
Subject: Re: could initialize return an existing object instead of a new instance?

2012/9/25 Gary Weaver <lists@ruby-forum.com>:
> Specifically curious about whether it would be possible to implement a
> StringPool in Ruby such that the same object with same object_id would
> be returned if you tried to construct with the same value, unless a bang
> method (like chomp!) were called on the object in which case instead of
> returning the same object instance from the bang method, it would return
> a different object instance. I told someone that this would be a massive
> change since it would break these two assumptions:

Is that an academic discussion or an attempt for practical
optimization? Because Ruby sorta kinda does this internally.

http://patshaughnessy.net/2012/1/4/never-create-ruby-strings-longer-than-23-characters
http://patshaughnessy.net/2012/1/18/seeing-double-how-ruby-shares-string-values


-- Matma Rex