Unfortunately I have to write it nearly every day in my job at Google. The biggest failures are the lack of generics or any form of immutability. It's basically

Unfortunately I have to write it nearly every day in my job at Google. The biggest failures are the lack of generics or any form of immutability. It's basically impossible to write any kind of abstraction in Go. That's unacceptable for a language created in the 21st century.