Roadmap && milestones 2022

ROOT
1

Happy NY!
what is the Roadmap && milestones of ROOT development for 2022?

Regards. Valeriy

2

Hi Valeri,
Happy new year to you too!
We’ll let you know once it is finalized
Cheers, Bertrand.

3

Hi Bertrand,
where can I find the status of V7 development?

Regards. Valeriy

++
Did you manage (is it possible) to build 64-bit ROOT under windows?

4

Not sure we have a status report of v7… Maybe @Axel knows

Yes, the current master compiles on 64-bit, but there are still some failing tests

5

I mean arch=x64, not win32 …

6

right, and as I said, it does compile, but some tests are failing in 64-bit

7

great!
Did you compile it with cl or clang?

8

With cl, as described in Installing ROOT - ROOT, for example:

cmake -G"Visual Studio 16 2019" -A Win32 -Thost=x64 -DCMAKE_VERBOSE_MAKEFILE=ON -DCMAKE_INSTALL_PREFIX=../root_install ../root_src
9

I meant
cmake -G"Visual Studio 17 2022" -A x64 …

++
about building … it takes >3 hours to compile llvm on my laptop. Is it neccesary to have it in the ROOT sources?

10

Yes, both should work

11

Hi Valeriy,

I have updated the ROOT7 page to reflect what’s going on. Don’t hesitate to ask any specific questions you might have!

Axel.

12

Hi Axel,
Attributes are important and powerful feature in C#
There is similar thing in ROOT - in place comments of class methods which are accessible via Reflection

For example, long time ago I introduced // *SIGNAL signature to point out that the method can be used in signal-slot connection.

There is “Obsolete” attribute in C# saying about the method should not be used if possible.

I suggest to use similar technique in the v7 development

old interfaces will simply stay frozen

Regards. Valeriy

13

Hi Axel,
I VERY like adopting RootJS approach for canvas graphics!
In fact this is back ''to origin", to the good old times of Valeri Fine when TCanvas was without TGxxx decorations.
I would add SDL2 implementation for the internal “core graphics” to run it (GPU/GL/DirectX powered) everywhere and even on my smartphone :slight_smile:

Regards. Valeriy

14

Hi Axel,
do you know any news on adding Reflection to the C++ standard? It would be great for ROOT7

Regards. Valeriy

15

Totally! We finally have the “technical specification” published: ISO - ISO/IEC TS 23619:2021 - Information technology — C++ extensions for reflection

Now, people hate templates, but it’s not clear what else to use (constexpr, consteval, etc is really not nice to use either). I hope we will find out this year!

16

he-he :slight_smile:

BUY THIS STANDARD for CHF158

17

Well, you know… the draft is available for download here and you can even latex it yourself from this. But somehow ISO isn’t stating that :wink:

18

that’s better!
why it took for so long time to even for drat?
seems C++ is the last BIG language which do it :frowning:

19

It’s slow because it’s done to a large part by people like me, who have a real job on the side :wink: I agree it’d be really good for C++ to have reflection, finally.

20

I read it during 6 hours trip from Protvino to Dubna today …
sorry to say, but messy :frowning:

during 6 hours trip I also read Rene’s “The future of HEP computing” … that’s the different story, but funny