From: Daniel Schierbeck <daniel.schierbeck@...>
Date: 2006-05-28T18:19:21+09:00
Subject: Re: Crazy thought -- Rubyish type conversion?

Farrel Lifson wrote:
> It will make catching exception on type 'conversion' a bit hard. How
> would you handle:
> 
> irb(main):001:0> 1.05.to_sym
> NoMethodError: undefined method `to_sym' for 1.05:Float

I'm not sure where you're getting at -- there should be raised either a 
NoMethodError or an ArgumentError. I'm not sure what's best, but I can't 
see what the big deal is.

One thing that might need some though is whether a rescue clause on the 
method definition should rescue exceptions raised when an argument 
doesn't respond to the conversion method, i.e.

   def test(str foo)
     # blah
   rescue ArgumentError  # or NoMethodError
     puts "dude, you gotta give it a string..."
   end


Daniel