From: Vincent Fourmond <vincent.fourmond@9online.fr>
Date: 2006-12-30T08:35:00+09:00
Subject: Re: Methods validating their arguments: good or bad?

Michael Judge wrote:
> What do you think?  Do you usually validate your arguments?

  I usually don't, first because I find it makes the code less readable,
and second because of the performance loss. What I would like, however,
is something Eifel-like:

def method(a)
entry_check
  a.is_a(String)
begin
  # now do something with code
exit_check
  # a test on exit
end

  And the possibility to simply turn it off, that is, completely skip
over the entry_check and exit_check blocks.

  What do you think ? I think that it would be a marvellous addition to
Ruby. Of course, that doesn't stop you from writing Test::Units, that
would be somehow orthogonal.

  Cheers,

	Vince

-- 
Vincent Fourmond, PhD student
http://vincent.fourmond.neuf.fr/