From: Ben Bleything <ben@...>
Date: 2010-02-14T02:46:59+09:00
Subject: Re: What is the best exception to use for bad Data State?

On Sat, Feb 13, 2010 at 9:10 AM, Xeno Campanoli
<xeno.campanoli@gmail.com> wrote:
> For now I am using "ScriptError".  I was using "SyntaxError", but I think
> that was just wrong.  Here are some places:
>
> I have what I want to be pure virtual methods in a base class:
>
> def myPureVirtualMethod
>        raise ScriptError, "This should never be called.  Daughter Classes
> MUST         define their own."
> end

I use NotImplementedError for base methods in a "virtual" class.

> def validateThatThingMadeByPureVirtualMethodIsThere
>        unless theThingMMadeByPureVirtualMethodIsThere?
>                raise ScriptError, "That thingy isn't there."
>        end
> end

Absolutely NotImplementedError here too.

Ben