From: Roger Pack <rogerdpack@...>
Date: 2009-11-29T13:40:59+09:00
Subject: [ruby-core:26936] Re: Caching #to_s for immutables (and a possible 	future for constant-folding)

> �It reduces the number of #to_s Strings created during the MRI test suite
> for NilClass, TrueClass, FalseClass, Symbol and Float objects by 1890
> Strings.

Sounds like it has potential, especially for long-lived constants and
for symbols, which themselves are never collected anyway.

Perhaps adding an Object#to_s_nonfrozen would be convenient?

Also do you have any benchmarks showing improvement? Does it break rails?
-r