One example is n-dimensional arrays where each element could be a byte, uint16, int16, ... , uint64, int64, float, or even some custom vector. In a language wi

One example is n-dimensional arrays where each element could be a byte, uint16, int16, ... , uint64, int64, float, or even some custom vector. In a language with generics, you could describe the nD array more simply and the operators work depending on what was passed. The implementation can also be shared across a number of similar element types. In Go, though, you’d need to use interfaces and at some point you’d have to make tradeoffs about speed, simplicity of the implementation (e.g. hand-coding each element implementation) vs use of interface function calls to get properties, etc. One example is to look at how Go handles the Image package vs other languages with generics. https://golang.org/pkg/image/ https://golang.org/pkg/image/