Forum: IronRuby Calling overloaded methods

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Alex 2. (Guest)
on 2009-01-09 18:16
Hello,

C#
    public class Cls {
        public void foo(object a) {
            Console.WriteLine("foo #1");
        }
        public void foo(object[] a) {
            Console.WriteLine("foo #2");
        }
    }

Ruby:

    Cls.new.foo(7)
    Cls.new.foo([3, 4])

Output:
    foo #1
    foo #1  <-- Calling foo(object a) again


So how can I call foo(object[] a)?

- Alex
Curt H. (Guest)
on 2009-01-09 19:34
(Received via mailing list)
You'll need to build a CLR array rather than a Ruby array.

require 'mscorlib'
System::Array.create_instance(System::Object.to_clr_type, 2)
o = System::Array.create_instance(System::Object.to_clr_type, 2)
>>> o[0] = 3
>>> o[1] = 4

You can monkey-patch Array and add this as a helper:

class Array
  def to_clr_ary
    o = System::Array.create_instance(System::Object.to_clr_type,
length)
    each_with_index { |obj, i| o[i] = obj }
    o
  end
end

CLR arrays and Ruby arrays are totally different; Ruby arrays are much
more similar to "List<object>" than to "object[]".  So it's unlikely
that IronRuby would ever do this conversion automatically for you.
Tomas M. (Guest)
on 2009-01-09 19:41
(Received via mailing list)
[3,4] is not an array of objects. It's a RubyArray.

You can create a CLR array like this:

v = System::Array.of(Object).new(3)
[1,2,3].each_with_index { |x,i| v[i] = x }

Tomas
Alex 2. (Guest)
on 2009-01-09 22:12
Thank you!
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