golang notes

todo.md

1. hash.Sum([]byte{}) does not do what I expected it to do. It prefixes the output with those bytes. I expected it to use it as a suffix for the hashing algorithm, but without actually affecting the underlying hash data. i.e. hash.Sum([]byte("foobar") -> "foobar<hash(written bytes)>" instead of "<hash(written bytes + "foobar">" https://play.golang.org/p/eCeUTlFCx4 Rereading the docs this makes sense now. But probably could use some additional examples.