https://blog.kentcdodds.com/classes-complexity-and-functional-programming-a8dd86903747
origin - http://www.pipiscrew.com/?p=11432 when-he-use-classes-what-he-do-instead-and-why
https://blog.kentcdodds.com/classes-complexity-and-functional-programming-a8dd86903747
origin - http://www.pipiscrew.com/?p=11432 when-he-use-classes-what-he-do-instead-and-why