For the app being described, would there really be six different type signatures required? Generics would absolutely be nice for Go, primarily because they wou

For the app being described, would there really be six different type signatures required? Generics would absolutely be nice for Go, primarily because they would allow the core libraries to provide all of these rich collections. However if we're discussing the notion that someone can write these themselves, it just seems contrived that people think generics are critical for any specific app -- in the example he described, it sounds like he would need one single concrete implementation.