Note that the cost of interface{} is, essentially the same cost java imposes. Luckily it's used less, but that doesn't change it really. Anything becomes a dou

Note that the cost of interface{} is, essentially the same cost java imposes. Luckily it's used less, but that doesn't change it really. Anything becomes a double pointer indirect. And just for completeness : even java has better tools for abstractions.