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On Thu, Jun 2, 2011 at 04:45, Miles Bader <miles@gnu.org> wrote:
> Tomas Guisasola Gorham <tomas@tecgraf.puc-rio.br> writes:

> function callable (x)
>  return type(x) == 'function' or getmetatable(x).__call
> end

You really want to check that getmetatable(x) returns a table.

It may return any value that user set to __metatable field (and also
it may return nil — if value has no metatable).

Alexander.