I would have, and I work in tech. I'd guess that most people who use iOS have zero idea of what Android can and can't do, because they never use it and probably never will so what's the point of trying to find out.
Seconded. I never knew Android had this—but then again I couldn't care less about what Android can do. There is so much stuff fundamentally off-putting for me about the entire Google ecosystem that I'd never consider switching anyway.
On the contrary, I would take this as evidence that these projects are alive and well - they have people who care enough to try to affect their future trajectory.
I don't think it's abstract at all. Rub something sharp (anything from a stick to a phonograph needle) on an object and you'll directly transcribe its spatial frequency spectrum into an audio frequency spectrum.
"Spatial frequency spectrum" typically refers to visual elements of an object, and has nothing particularly to do with its structure. Entirely smooth surfaces banded in different colors have a "spatial frequency". Extremely irregularly surfaces have no effective spatial frequency. Objects on the same scale as, say, a human head, would have to be "rubbed" at ridiculous high rates (and repeatedly) to even get into a "frequency" range that might include pressure variations that would be considered as a "wave".
I think you're imagining an entirely too limited set of objects.
It's possible to fix this in application code with a Primitive<T> or NoDefault<T> wrapper that acts like a T, except doesn't have a default constructor. Use Primitive<int> wherever you'd use int that it matters (e.g. struct fields), and leaving it uninitialized will be a compiler error.
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