I wholly disagree. It is the core of *your* Qt5 apps, but probably won't be
mine.
It is also a poor decision to say "let them eat cake" and by cake I mean Qt4.
If you put JS into QtCore, then you need to make a QtKernel, however I also
advise against this because this would create confusion between QtCore 4 and
QtCore 5.
I've been a proponent of non-gui QML, meaning JS in QCoreApplication apps.
However as I see it, the JS should be a separate component that is included
just as SQL is. I even think there is a better argument that QtNetwork be put
in core, since it is rare not to have any kind of network connectivity in this
day and age. However, please note that recommendation is based on actual
observation, whereas your reasoning that Qt5 apps will all need JS is based on
anticipation. I prefer not to be wrong, and when you guess based on supposed
future behavior, you will very likely be wrong. Let there be a QtJavaScript or
QtQMLCore module.
________________________________
From: Bjørn Erik Nilsen <[email protected]>
To: [email protected]
Sent: Thursday, September 8, 2011 7:25 AM
Subject: Re: [Qt5-feedback] QML/JS engine in QtCore?
On 9/8/11 12:59 PM, ext Peter Kuemmel wrote:
> JS in QtCore is not needed in headless embedded software.
> But it would be a reason to not use Qt in such a project if JS couldn't be
> disabled.
>
Exactly. It would be a good reason to not use *Qt5* in such a project.
Qt4 is more suitable for that use case.
> I think "Core" is a the wrong name for a library with a complete JS
> interpreter/jit compiler.
> Maybe it is possible to introduce an additional library (QtMicroCore?)
> a level below QtCore which really has only core functionality: signal slot,
> reflection, QString, ... but absolutely nothing gui related (QSize, QPoint,
> QState*, QAnimationGroup, QTranslation, ...)
>
With the vision of Qt5 fresh in mind, it makes perfectly sense to move
JS into QtCore. It *is* the core of all Qt5 applications.
--
Bjørn Erik Nilsen
Software Engineer
Nokia, Qt Development Frameworks
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