From: Gary Wright <gwtmp01@...>
Date: 2007-05-10T04:36:39+09:00
Subject: Re: using dynamic method calling with attr_writer methods


On May 9, 2007, at 3:23 PM, Markus Hohenhaus wrote:

> I'm a total Ruby newbie looking for help.
> [...]
>    @methods.each { |a| test.send(a, 'foo') }

> This throws the error: ArgumentError: wrong number of Arguments (1 for
> 0)

The problem is you are calling the 'getters' with an argument ('foo').
Getters don't take an argument, thus the error message.  You want:

    @methods.each { |a| puts test.send(a) }

I added the puts, otherwise you won't get any output.

If you want to call the setters, you need to send a different method  
name:

    @methods.each { |a| test.send("#{a}=", 'foo') }

And of course you need to send an argument also.

Gary Wright