Seems like this: You can of course branch on the array element types and maybe even paper over the whole mess with sufficient macrology (which is what

Seems like this: You can of course branch on the array element types and maybe even paper over the whole mess with sufficient macrology (which is what LLA ended up doing), but this approach is not very extensible, as eventually you end up hardcoding a few special types for which your functions will be "fast", otherwise they have to fall back to a generic, boxed type. is exactly what numpy/scipy is doing (s/macrology/c-functions/), but they are successful.. granted julia has more ground-up support for these things, but it doesn't seem like an impediment to scientific computing per-se, provided sufficient userbase