Re: Get the type of a PV in C++ API

[Ralph Lange via Tech-talk <tech-talk at aps.anl.gov>]

Not an answer to your question, but...

That library you are using is part of the first generation of user-facing libraries.

Meanwhile, there's a second generation (both for C++ and Java) with more modern and language-specific API designs. Better usability, easier to work with, better performance.

These second-generation libraries are stable; they will be replacing the older generation.

For your use case: The C++ second-generation library is called PVXS - https://mdavidsaver.github.io/pvxs/

For any new development - please start there. It will save you from migrating your application at some point in the near future.

Cheers,
~Ralph

On Thu, 2 Nov 2023 at 12:46, Eusebio Naif Al-Soliman Fuentes via Tech-talk <tech-talk at aps.anl.gov> wrote:

Hello everybody.

 

I have a small question. In the pvaClient library for C++ (https://docs.epics-controls.org/projects/pvaclient-cpp/en/latest/) there are many examples to get the value and other fields of a PV.

 

However, in order to get the value as a double, like in this example https://github.com/epics-rip/exampleCPP/blob/master/exampleClient/src/examplePvaClientGet.cpp, you have to previously know that the PV value is a double. Is there any method to get the type (int, long, double...) of the value field? Something like ->getType().

 

Thanks in advance.

--

Saludos/Best regards

University of Granada  

Eusebio Naif Al-Soliman Fuentes
MSc. Data Science and Computer Engineering

eunaif at correo.ugr.es