[Qt-interest] Scripting support for Qt/C++ application

[Jonathan Greig]

If you are looking for performance in a scripting language, I would suggest
looking at pawn. QtScript and python simply do not keep up with it from my
experience (I'm working on an inter-language scripting engine).

QtScript is really the best way to go. Its a reasonably good scripting
language that is really easy to embed and extend. The Qt documentation on
it is very good. It sounds like it will receive a healthy performance boost
when Qt starts using V8 too if I remember correctly from an old blog post.

For an idea on what performances you probably will see, take a look at
this:
http://shootout.alioth.debian.org/u32/which-programming-languages-are-fastest.php

Bo, do you have any suggestions on an easy way to call python that isn't an
inc/dec ref nightmare? Right now I'm using boost python for exposing native
functions, and calling expressions to run my python scripts. I agree that
Its somewhat on par with QtScript on light scripting but bombs when heavier
scripting is used.

- Swyped from my droid.

On Oct 31, 2011 2:55 AM, "Bo Thorsen" <bo at fioniasoftware.dk> wrote:

Den 31-10-2011 02:33, Syam Krishnan skrev:

>
> Hi..
>
> I'm using Qt 4.5 on RHEL 5 to develop a dynamic data simulator
> application. I need sc...
I have implemented scripting with both QtScript and Python, and I
haven't seen much difference between those two. Performance isn't great
with either of them, but I don't think I have ever seen truly great
performance when scripting with general purpose languages.

Language wise, I prefer Python over Javascript. I think it's superior in
almost every way I can think of. And I will never agree that Javascript
(or ECMAscript, if you prefer) was a better choice. I told the original
author of QtScript this already :)

However, unless you have very good reasons to choose something else, go
with QtScript. It just makes your life easier on so many different
levels than if you try to incorporate a different language. It's better
integrated with QObject, and deployment is a non-issue. And it gives you
a path towards QtQuick, even though you might not find this important yet.

So even though I don't like the language much, I still say you should go
with QtScript.

Bo Thorsen,
Fionia Software.

--

Expert Qt and C++ developer for hire
Contact me if you need expert Qt help
http://www.fioniasoftware.dk
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