programming notes

Dave Thomas: All programming is maintenance programming, because you are rarely writing original code.
If you look at the actual time you spend programming, you write a bit here and then you go back and make a change.
Or you go back and fix a bug. Or you rip it out altogether and replace it with something else.
But you are very quickly maintaining code even if it's a brand new project with a fresh source file. 
You spend most of your time in maintenance mode. So you may as well just bite the bullet and say,
"I'm maintaining from day one."
The disciplines that apply to maintenance should apply globally.

https://sriramramani.wordpress.com/2015/05/06/custom-viewgroups/     customview 
http://www.javaworld.com/article/2073649/core-java/why-extends-is-evil.html

https://shapeshifter.design/
https://plus.google.com/+AlexLockwood/posts/AtDRT4QxFs2
https://medium.com/@kiwiandroiddev/distraction-free-reading-for-your-android-app-part-i-242f77466175