From: jjthrash@...
Date: 2006-10-20T23:10:13+09:00
Subject: Reverse Polish Ruby

Hey folks,

So.. all I wanted was an RPN calculator.  So I wrote one.  But, I
thought, why should I reimplement +?  Or -, sin, etc?  So I decided to
pass those requests along to Ruby.  After that, my coworker joined in
and we went a little overboard.

The resulting monstrosity is a gruesome combination of object oriented
programming language and Reverse Polish Notation.  For example: "2 1 +"
yields 3, right?  It's really doing 2.send(:+, 1).

Feel free to try it out.  I kinda like it.  But don't say I didn't warn
you it was gruesome.  At least it's a usable RPN calculator, and it's
fun that "1 1 { dup2 + } 10 evaln" gives you the first 12 numbers of
the Fibonacci sequence.

gem install rprb --source http://gems.jimmythrasher.com

Jimmy