[graalvm-users] Interop from R to Ruby

[Rodrigo Botafogo]

Hello…

I’ve being accessing R from Ruby with success with calls to Polyglot.eval.
like:

func = Polyglot.eval(“R”, “c”).call(1, 2, 3)

I’m now trying to do a callback from R to Ruby. I’ve tried something like:

class Callback

  def f(x, y)
    Math.cos(y) / (1 + x^2)
  end

end

remote = Polyglot.eval("R", <<-R)
function(rb_method) {
   rb_method.call(1, 2)
 }
R

remote.call(Callback.new.method(:f))

But this doesn’t work. Is there an easy way of making this callback? And
what about sending an instance of a class instead of a function?

Thanks
-- 
Rodrigo Botafogo
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