TODO
to be studied:
https://blog.csdn.net/love_se/article/details/7941876
https://blog.csdn.net/wangshubo1989/article/details/73294110
https://golang.org/pkg/encoding/ gob/
http://docs.huihoo.com/go/golang.org/pkg/gob/index.html
https://studygolang.com/articles/7504
https://studygolang.com/articles/3481
http://www.sohu.com/a/136487507_505779
https://github.com/suzuken/go-radix-gob-bench
http://www.infoq.com/cn/articles/json-is-5-times-faster-than-protobuf/
https://blog.csdn.net/wongcony/article/details/79298456
golang plusplus is an upgraded language like C++:
Function overloading function should be added.
Template compilation function should be added.