remove unused boost headers includes

[al-tu]

[mvieth]

@al-tu Are you still working on this? In the current state, it unfortunately does not compile ...

[al-tu]

@al-tu Are you still working on this? In the current state, it unfortunately does not compile ...

yes, i think i'm close to finishing this one. i thought there is an opportunity to get rid of date_time incluclusion, but there's no easy way to do it. also random lib may probably be replaced (as discussed in some issues), but that is to be addressed in a separate PR

[mvieth]

i thought there is an opportunity to get rid of date_time incluclusion, but there's no easy way to do it

I think date_time is mostly needed for to_iso_string and local_time, to create a string representing the current time (for filenames etc), right? Maybe std::strftime or std::put_time can replace that? But that's just an idea, you don't have to do that. And if you do, I would suggest a new PR for that

[al-tu]

i thought there is an opportunity to get rid of date_time incluclusion, but there's no easy way to do it

I think date_time is mostly needed for to_iso_string and local_time, to create a string representing the current time (for filenames etc), right? Maybe std::strftime or std::put_time can replace that? But that's just an idea, you don't have to do that. And if you do, I would suggest a new PR for that

i'll check out if there is a better option than basically copy-pasting those functions from boost (which doesn't seem to be a good idea). as for now, i've removed everything not used/forgotten/replaced with std::

[mvieth]

I don't fully understand some of the changes in gpu. Are they all a consequence of replacing the one boost::array with std::array?

[al-tu]

Thank you for your contribution! In the interest of getting this merged now, I reverted some changes in the GPU module that seemed off-topic or where the reason behind the changes weren't clear to me. But feel free to open a new pull request with those changes if you think they are important, then we can discuss them again.

thank you