[time-nuts] Re: Clock display on Linux systems?

[Adam Space]

Thanks for the suggestion. I am not averse to C++, and will definitely look
into these examples and try replicate something similar.

Adam

On Mon, Dec 6, 2021 at 3:35 PM Attila Kinali <attila at kinali.ch> wrote:

> On Sun, 5 Dec 2021 15:53:57 -0500
> Adam Space <time.isanapp at gmail.com> wrote:
>
> > For example,
> > the only solutions in Python (which I would prefer to use if possible,
> but
> > not necessary)
>
> I would advise against using python for something like this.
> time.sleep() of python is extremely inaccurate. For long
> sleep times (a few hours), it's off by 10-20s, and for
> short sleep times(1-60s) it's still off by up to 10%.
> I don't know what they are doing there, because the sleep
> systemcall does not exhibit this problem and neither does any
> other language I used in the past have that problem.
> Not perl, not raku, not java, and definitely not C.
> While being off by a few 10s of ms will not be noticable,
> if you are off by 100s of ms, that gets noticable when
> you have a clock to compare to. And if it gets really
> bad, you get even a Vetinary clock.
>
> If you are not averse to C++ I would recommend the Qt
> examples:
> https://doc.qt.io/qt-5/qtwidgets-widgets-digitalclock-example.html
> https://doc.qt.io/qt-5/qtwidgets-widgets-analogclock-example.html
> and build on them.
>
> Alternatively, allmost any GUI library for any language contains
> a clock example that you could modify.
>
>                         Attila Kinali
>
> --
> The driving force behind research is the question: "Why?"
> There are things we don't understand and things we always
> wonder about. And that's why we do research.
>                 -- Kobayashi Makoto
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