[Development] Adding more Datetime classes to Qt

Konstantin Ritt ritt.ks at gmail.com
Tue Apr 9 14:22:07 CEST 2019

Please read the QDateTime docs accurately.


вт, 9 апр. 2019 г., 15:11 Pouya Shahinfar <pswinpo at gmail.com>:

> Although QDateTime has a full set of methods for working with date and
> times in Qt, It could lead to misunderstanding. How? Well when you are
> saving a date or time in this class you do not know the time is local time,
> UTC time or it is for a specific timezone. Therefore, maintaining the
> application becomes harder. Let's consider this scenario:
> You open a project which is developed by someone else, and he/she used
> QDateTime for holding time and date. The problem here is you as a newcomer
> to project do not know the value in the class is based on UTC or local
> time, etc. if there was a class like QLocalDateTime, the code was more
> maintainable.
> Qt has an awesome set of classes but unfortunately when it comes to
> timing. the classes are really awkward. For instance, there is not a class
> for holding a time-span:
> https://forum.qt.io/topic/3160/qtimespan-interest
> As far as I concern, It would be a good idea that Qt has the following
> class:
> 1. QTimeSpan -> for holding duration of time.
> 2. QInstant -> For holding an instant of time in UTC time (like Java)
> 3. QLocalDateTime -> For holding local datetime
> 4. QUTCDateTime -> For holding UTC datetime
> 5. QZonedDateTime -> For date and times which is in a specific timezone.
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