Hi all, I just finished porting my initial C++ code to full QML/JS and I though I might share my first experience with V8. The number of code lines where at least halved. The two C++ model classes disappeared in two lines of code. Performance-vise I run into issues initially with object instantiation. Accidentally I instantiated each day item for the flickable month view at component construction time. I had to kill qmlscene after a minute of waiting. Generally item instantiation seems to be pretty expensive, but when it's up and running pure QML seems to run more fluently. My guess is that JS/V8 is doing realtime memory allocation more cleverly than Qt/C++, but I don't really care as long as it's working. By the way I'm working on a Lenovo Edge equipped with a Turion limited at 800Mhz. I don't think that any mobile device released this year will be slower;)
I also pushed a small JS library file with the pragma style as shown in the notepad-qml example. I started using the built-in Date object of Javascript and opted for extending it where functions seem to be missing (ideally with the same method names as in QDate). Like the last time I'm just pushing here some code to the public master branch without brothering much, if it breaks something somewhere. I'm used to follow this simple First Come First Service strategy from my commercial projects. Means, if you push some code first, you have to perform the SERVICE (yes in big letters) to listen to anybodies complaints and merge their stuff if it conflicts with your changes. Cheers, Frank -- gplus.to/frankencode frankencode@freenode -- Mailing list: https://launchpad.net/~ubuntu-phone Post to : ubuntu-phone@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-phone More help : https://help.launchpad.net/ListHelp
