From: Robert Klemme <shortcutter@...>
Date: 2011-08-26T23:36:29+09:00
Subject: Re: overloading methods question please?

On Fri, Aug 26, 2011 at 3:51 PM, Alexey Muranov
<muranov@math.univ-toulouse.fr> wrote:
> Yes, Hans Mackowiak is right, the case operator is more complicated than
> i thought.
> How would you case a class in this case?
>
> klass = a.class
>
>  case klass
>  when ???
>  ...

A generic solution is

def do_something(*args)
  case args.map(&:class)
  when [String, String]
    puts "Working on two Strings"
  when [Integer, String], [Fixnum, String], [Bignum, String]
    puts "Working on int and String"
  else
    raise TypeError, "Dunno what to do with %p" % [args]
  end
end

As you can see this soon becomes unwieldy.  Which brings us back to

> > it must be
>
> ... never done.

Kind regards

robert

-- 
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