On Wed, Mar 25, 2015 at 2:20 PM, Soni L. <fakedme+lj@xxxxxxxxx> wrote: > And how can I set __add __sub etc for cdata? ffi.setmetatype(ct, metatable) similar to setmetatable(), but once it's set, it's set. the advantage is that it's applied to _any_ object of the ctype mentioned, and it's _very_ fast. -- Javier