From: James Britt <jamesUNDERBARb@...>
Date: 2004-11-12T01:54:35+09:00
Subject: Re: Thinking About Java Interfaces In Ruby

Dave Thomas wrote:

> 
> On Nov 11, 2004, at 9:32, Lothar Scholz wrote:
> 
>> Hello James,
>>
>> JEGI> You don't really just say, "Pass in an object that responds to 
>> X, Y,
>> JEGI> and Z." in the RDoc, do you?
>>
>> Unfortunately yes. And it is of course a huge source of errors.
> 
> 
> Strange - that's not my experience.

Nor mine.  But there are some number of people who believe this to be true.

In some cases, they believe this because they heard it from a source 
they trust.  But for those who actually experience this, I wonder if 
there is something about their coding/design process that differs from 
those who find duck typing largely trouble-free.

Put another way, some find duck typing "a huge source of errors", others 
do not.  I do not think anyone is lying, so what accounts for the 
difference?  Class/method design? Unit testing? LOC?

James