On Tuesday, 12 May 2015 at 21:44:04 UTC, Kelly wrote:
Well the first fully working example of a large library is
finally working with Calypso. Elie has managed to get a Qt5
demo program to compile and run!!
The demo is a D version of the Qt5 Widgets demo. This is a
simple window with a pseudo address book app. The demo uses a D
class inheriting from QWidget, calls 'super(parent)' from D
code and uses the QStrings, QLabel, QLineEdit, QLayout,
QGridLayout classes, among other things. You can see the code
here:
https://github.com/Syniurge/Calypso/blob/master/tests/calypso/qt5/qt5demo.d
The demo is confirmed to work with Qt5.4 and Qt5.2.1.
While this might not seem like a really big deal, please keep
in mind that while compiling this demo, Calypso effectively
parses and produces 692 object files, including large swathes
of the C++ STL and most of the Qt library!
The latest push last night also cut down on compile times quite
a lot. Doing the initial compile of the example takes about 28
seconds on my mid-level Intel i5 machine, versus around 2
seconds for just the C++ version. After generating a cache file
with last nights commits you can recompile the project in just
7.5 seconds...which I think is quite good for just getting
things up and running :)
Thanks,
Kelly
That's great! I'm looking forward to being able to easily make
direct use of some of the great C++ code out there.
Are there are performance pitfalls to watch out for that are
unique to the way calypso interfaces between D and C++? E.g.
sneaky copies, implicit callbacks to keep things synced etc.
