From: lith <minilith@...>
Date: 2010-02-17T02:10:34+09:00
Subject: Re: Why no ++ and --?

> ++ and -- modify their receivers.  Since Ruby's Numeric types are immutable,
> they cannot be modified.  So the only solution is to implement ++ and -- as
> assignment operators.

Other languages solve similar problems by providing references/
pointers to variable or with macros etc. This isn't about
immutability.