Thank you so much for your help; I finally got it to work! I think what was
happening the first time around was that there was actually a `pmt` runtime
issue that I misinterpreted as being an issue with the type conversion when
going from Python to C++. But it turns out that it was actually due to me
calling `pmt::nth` with a vector, when it is in fact only valid for lists, in a
different part of the code. I suppose the compiler has no way of knowing the
underlying types when it comes to `pmt`s, so errors like that are not caught
during compile time.
Best,
Anton
________________________________
From: Anton Ottosson
Sent: Friday, July 16, 2021 12:08:42 AM
To: discuss-gnuradio@gnu.org
Subject: Re: Non-hacky method to take list of keys as parameter?
Oh, sorry! I meant Marcus, of course, not "Amrcus".
Best,
Anton
________________________________
From: Anton Ottosson
Sent: Friday, July 16, 2021 12:07:47 AM
To: discuss-gnuradio@gnu.org
Subject: Re: Non-hacky method to take list of keys as parameter?
Hi Amrcus,
Your first example would be ideal, but I seem to remember trying that and
having issues with it, probably due to the implicit type conversion from Python
to C++. I will try again, but is there anywhere one can look up what the
conversions are?
Best regards,
Anton
________________________________
From: Marcus Müller <mmuel...@gnuradio.org>
Sent: Thursday, July 15, 2021 11:54:00 PM
To: discuss-gnuradio@gnu.org
Cc: Anton Ottosson
Subject: Re: Non-hacky method to take list of keys as parameter?
Just use `dtype: raw` in the YAML file; then anything that's valid python goes!
For example `["key1", "key2"]`,
but also other things like dicts, `{ "key1": 42, "key2": 1337 }`.
Best regards,
Marcus
On 15.07.21 06:58, Anton Ottosson wrote:
> Hi,
>
> I'm writing a block for an OOT module and I would like to take a list of keys
> as one of
> the parameters. They will be used to select entries in a pmt dictionary. I
> first tried to
> use std::vector<std::string> as the parameter type, but there doesn't seem to
> exist any
> corresponding string_vector dtype to use in the YAML file
> (https://wiki.gnuradio.org/index.php/YAML_GRC
> <https://wiki.gnuradio.org/index.php/YAML_GRC>). I then switched over to pmt
> arguments and
> managed to get it to work, but it is very ugly and hacky. This is the kind of
> thing I have
> to enter into the parameter field on the block:
>
>
> pmt.list2(pmt.intern("key1"), pmt.intern("key2"))
>
>
> Is there a better way? Is there a block that does something similar that I
> can take a look
> at? Best I could find was PDU Filter, but it only takes a single key, not a
> list.
>
>
> Best regards,
>
> Anton
>
