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Why would you want to write a function onto such different data types? Yes, both are (Int, Int) but the elements of the 1st one are not correlated and the elements of the 2nd one are (somewhat) correlated.

I can't think of a meaningful function that should be able to support both Point's and Size's. Except for prettyprinting or serialization maybe, but that can be handled in statically typed languages, no?

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Adding a point to a size can give you a corner of a shape. You can have functions for scaling to aspect ratios, normalizing, and stretching. I don't see why any would be specific to one type or the other. In math you don't usually deal with points or sizes, you deal with vectors.

But admittedly conversion between Points and Sizes is not a pain point for most people. It's much worse when dealing with types that have the exact same purpose, just from different libraries.

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