This. I find Swift and Rust enums, which are indeed very similar, to be incredibly good at modelling the real world. For example the standard geospatial vector

This. I find Swift and Rust enums, which are indeed very similar, to be incredibly good at modelling the real world. For example the standard geospatial vector types which are heterogeneous and even recursive in the case of GeometryCollections can be modelled and operated upon very cleanly.