Den 19.02.2012 01:12, skrev Nathaniel Smith:
I don't oppose it, but I admit I'm not really clear on what the supposed advantages would be. Everyone seems to agree that -- Only a carefully-chosen subset of C++ features should be used -- But this subset would be pretty useful I wonder if anyone is actually thinking of the same subset :-).
Probably not, everybody have their own favourite subset.
Chuck mentioned iterators as one advantage. I don't understand, since iterators aren't even a C++ feature, they're just objects with "next" and "dereference" operators. The only difference between these is spelling: for (my_iter i = foo.begin(); i != foo.end(); ++i) { ... } for (my_iter i = my_iter_begin(foo); !my_iter_ended(&i); my_iter_next(&i)) { ... } So I assume he's thinking about something more, but the discussion has been too high-level for me to figure out what.
C++11 has this option: for (auto& item : container) { // iterate over the container object, // get a reference to each item // // "container" can be an STL class or // A C-style array with known size. } Which does this: for item in container: pass
Using C++ templates to generate ufunc loops is an obvious application, but again, in the simple examples
Template metaprogramming? Don't even think about it. It is brain dead to try to outsmart the compiler. Sturla