[Rubycocoa-talk] casting a struct

[Steve C. <sco...@gm...>]

Here's an inspect of an object pointer I'm trying to unpack:

#<OSX::ObjcPtr:0xe0e25a cptr=0x2191ec0 allocated_size=0
encoding={_CFURLRequest=}>

So I try to cast it:

p ns_url_request._CFURLRequest.cast_as('{_CFURLRequest=CFURLRequest}')

Which fails with:

Can't convert object to type '{_CFURLRequest=CFURLRequest}'

I found the following information on casting to struct from the objc pdf:

structure {name=type...}

I've tried many different variations on that struct cast string.  Does
anyone know what the proper form is?

-Steve