From: ts <decoux@...>
Date: 2001-07-17T17:41:28+09:00
Subject: [ruby-talk:17969] Re: Overloaded methods

>>>>> "H" == HarryO  <harryo@zipworld.com.au> writes:

H> Even though I've written a lot of C++ and java code, I can't remember the
H> last time I wanted to overload a method to work differently when
H> different types of parameters were passed.  Mainly, I have seen cases
H> where some parameters have default values.

 This is not a problem default values

pigeon% cat b.rb
#!./ruby
class AA < Array; end
class A
   def tt(Array a, String b = [])
   end
   def tt(AA a, String b = "default")
      p b
   end
end

A.new.tt AA.new 1, 2
A.new.tt [1, 2]
pigeon% 

pigeon% b.rb
"default"
./b.rb:12:in `tt': object mismatch expected String got Array (RuntimeError)
        from ./b.rb:12
pigeon% 


Guy Decoux