The thing that I most favor in cross-platform programming is the code quality. Heck, I might almost say that even if you only intend to write a program for Linu

The thing that I most favor in cross-platform programming is the code quality. Heck, I might almost say that even if you only intend to write a program for Linux, make sure it compiles and works on Windows and OS X too. (Well, almost.) Somehow, almost magically, if you have two or preferably three platforms the relevant code abstracts itself nicely out of what is the low-end mess composed of platform specific concepts. I don't mean merely thinking in terms of FooHandles and BarStreams instead of "file descriptors" but the whole process of thinking that happens when you have to separate, in your brain, that what is "platform level code" and what is "problem level code".