RE: Is PMT_NIL a Valid Dictionary?

[Jeff S]

Cool.  I appreciate the clarification.  I had always taken an empty dictionary as a dictionary object without data, and a NIL as not an object, and the two were different.  This helps my PDU checking.

 

And I also found the update I missed which added is_pdu(), which simplifies some of my checking.  So, even better!

 

Thanks for the help,

Jeff

 

From: Jeff Long <willcode4@gmail.com>
Sent: Thursday, June 30, 2022 8:02 AM
To: Jeff S <e070832@hotmail.com>
Cc: discuss-gnuradio@gnu.org
Subject: Re: Is PMT_NIL a Valid Dictionary?

 

Yes, an empty dict is NIL, so that is (confusingly) valid.

 

On Thu, Jun 30, 2022 at 7:05 AM Jeff S <e070832@hotmail.com> wrote:

GNU Radio Version:  v3.9.6.0-23-ge3506b13

 

I was writing a QA test and decided to try,

 

self.assertTrue(pmt.is_dict(pmt.PMT_NIL))

 

and it passes.  I was just wondering if pmt.PMT_NIL is considered a valid dictionary object, as opposed to,

 

my_dict = pmt.make_dict()

self.assertTrue(pmt.is_dict(my_dict))

 

Just trying to get a better understanding and couldn’t find an answer.

 

Regards,

Jeff