If you look past the book, and directly at the STL, you'll find a common example: the "fmt" library, shortened to save three letters. Or compare the verbosity of these two examples from language docs, and the length and descriptiveness of variable names in them: https://docs.oracle.com/javase/tutorial/essential/io/cl.html to https://golang.org/pkg/bufio/#example_Scanner_emptyFinalToke...

I agree, it's a great language. These naming conventions are part of its developers and community.

There is no issue with having short names to describe well-known entities part of the language, or trivial code.

Your example from pkg.bufio is trivial and but still the variables names are meaningful. There is a difference between clearly and meaningful, and verbose.

Your example from Java is not very different.

I feel that the point is not being understood here.