Linked by Amjith Ramanujam on Wed 20th Aug 2008 19:37 UTC
DevX interviewed Bjarne Stroustrup about C++0x, the new C++ standard that is due in 2009. Bjarne Stroustrup has classified the new features into three categories Concurrency, Libraries and Language. The changes introduced in the Concurrency makes C++ more standardized and easy to use on multi-core processors. It is good to see that some of the commonly used libraries are becoming standard (eg: unordered_maps and regex).
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Member since:
2006-01-02
At most, your arguments against C++ template metaprogramming are arguments from the implementer's point of view.
From the user's point of view, I don't think there exists any significant drawback! There used to be the too long compile times but that changed a lot in recent years as C++ compilers improved.
Coming back to the implementor's point of view... If you want to see how template metaprogramming allowed 2 devs to write only 11 KLOC and surpass 500+ KLOC libraries, see my blog here, http://bjacob.livejournal.com/6723.html
At the end of the day, this "the code is too obscure" argument is old and tired. It may be relatively complicated, but since it allows unmatched results, it's just worth it.
By the way here are some of our main source files. Do you really find them _that_ obscure? And mind you, C++0x is designed exactly to allow even easier metaprogramming (among other things).
http://websvn.kde.org/trunk/kdesupport/eigen2/Eigen/src/Core/Matrix...
http://websvn.kde.org/trunk/kdesupport/eigen2/Eigen/src/Core/Assign...
Your argument, that external code generators are preferable, made a lot of sense in the times where C++ compilers were not powerful enough for metaprogramming, but nowadays this problem is pretty much solved, although it still takes some care to write meta-code that's easy on the compiler.
Edited 2008-08-21 03:12 UTC