il Sat, 10 Jul 2004 05:32:59 +0900, zuzu <sean.zuzu / gmail.com> ha
scritto::


>
>how are variables in ruby "mutable" then?  ruby assignment merely
>labels objects.
>
>a = 42
>a = 64

ruby is not a pure functional language, and actually allows this. 
In pure FP you have the ability to actually replace every expression
with it๗ิ actual value, this is impossible if an expression (i.e. a
variable name) can be changed.