[kombine]

"You can use one Float32Array: x component gets even indices, y gets odd ones."

That is exactly my point of choosing the performance vs expressibility. But then how do I write algorithms in a generic fashion for them? In C++ I have templates and template functions, so I can write algorithm that will work for any type of the array. And I'm not even talking about STL which decouples algorithms from containers, by making the latter provide a hierarchy of iterators. Other languages like Haskell also provide compile-time polymorphism. And here we are in 2012 - there is an ad-hoc solution that only works in few browsers, and a proper one is only down the road.