From: larry <ljw1001@...>
Date: 2006-03-19T04:48:49+09:00
Subject: can you enable coercion between types?

I have a ruby class called Duration that represents a unit of time.
It's main attribute is a number that represents the duration in
seconds.

If I try to save it to a DB using Rails, I get a "Duration can not be
coerced into Float" error.  Is there a way to modify the definition of
Duration to enable automatic coercion into a float?  (I'm thinking of
something like adding a  "to_float" method to the class.)

thanks in advance
larry