<div dir="ltr"><div class="markdown-here-wrapper" style=""><p style="margin:0px 0px 1.2em!important">Hello…</p>
<p style="margin:0px 0px 1.2em!important">I’ve being accessing R from Ruby with success with calls to Polyglot.eval. like:</p>
<p style="margin:0px 0px 1.2em!important">func = Polyglot.eval(“R”, “c”).call(1, 2, 3)</p>
<p style="margin:0px 0px 1.2em!important">I’m now trying to do a callback from R to Ruby.  I’ve tried something like:</p>
<pre style="font-size:0.85em;font-family:Consolas,Inconsolata,Courier,monospace;font-size:1em;line-height:1.2em;margin:1.2em 0px"><code style="font-size:0.85em;font-family:Consolas,Inconsolata,Courier,monospace;margin:0px 0.15em;padding:0px 0.3em;white-space:pre-wrap;border:1px solid rgb(234,234,234);background-color:rgb(248,248,248);border-radius:3px;display:inline;white-space:pre;overflow:auto;border-radius:3px;border:1px solid rgb(204,204,204);padding:0.5em 0.7em;display:block!important">class Callback

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

end

remote = Polyglot.eval(&quot;R&quot;, &lt;&lt;-R)
function(rb_method) {
   rb_method.call(1, 2)
 }
R

remote.call(Callback.new.method(:f))
</code></pre><p style="margin:0px 0px 1.2em!important">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? </p>
<p style="margin:0px 0px 1.2em!important">Thanks</p>
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ZGl2Pg==" style="height:0;width:0;max-height:0;max-width:0;overflow:hidden;font-size:0em;padding:0;margin:0"></div></div><div class="markdown-here-signature">-- <br><div dir="ltr" class="gmail_signature">Rodrigo Botafogo<br><br></div></div></div>