Objective-C and runtime type inspection

Bob Ippolito <>
Thu Aug 17 22:29:09 CEST 2006

On 8/17/06, Joel Reymont <> wrote:
> On Aug 17, 2006, at 9:08 PM, Bob Ippolito wrote:
> > What we do in PyObjC is use the RTTI to determine the size of the
> > chunk to allocate, and return a tuple of (rval, output1, ...).
> What if you have an _in_ structure that you need to pre-populate?

You said that would be a binary.

> There's no way to get the size of that structure from Erlang unless
> there's a way to ask the c-node to give you the size of that
> structure somehow.
> Maybe a message that returns the size of each argument for a given
> selector?

Makes sense.


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