maemo.org - Talk - View Single Post - Creating new app for Nokia N9

	marxian	2011-10-15 , 21:33
	Posts: 2,448 \| Thanked: 9,523 times \| Joined on Aug 2010 @ Wigan, UK	#5

Originally Posted by rash.m2k

The documentation only teaches you some stuff, best practices come from developers.

Thank you for your response.

Also I'm a little confused as to how QML is run on the N9 - is QML compiled into native code and then run? And thus would there be a big difference in performance between c++ and QML?

QML is interpreted at runtime, so there will be an overhead. I'm not qualified to say how significant that overhead is, but I will say that the performance is more than acceptable on my N950 (and the N900 also). I think the biggest hit is in startup time. In any case, there isn't much choice in terms of the UI code. You can still write most of the program logic in C++ to get the best performance possible. I started out using a lot of JavaScript, but have steadily moved the backend code to C++ as I have become more confident with it.

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