From: Intransition <transfire@...>
Date: 2010-02-22T21:29:15+09:00
Subject: Re: Complex type-checking



On Feb 21, 10:43 pm, Ken Coar <the.rodent.of.unusual.s...@gmail.com>
wrote:
> I have a number of methods that can take arguments in two different
> forms.  As an example:
>
> method(tuple [, ...])
>
> where 'tuple' can be things like (Point, Point, Integer) or (Numeric,
> Numeric, Numeric, Numeric, Integer) (so either a Point object
> representing the coordinates, or the coordinates directly).
>
> I realise that type-checking in Ruby is anathematic to some, but I want
> to generate some intelligent error messages in some cases.  So please
> let's leave the 'why do you want to do that' bit alone for now. :-)

Let the error happen then wrap the call in a begin/rescue clause and
give more intelligent error messages based on the return error.