When associations are based on reference, not values, think arrows, not what value is stored at the location the arrow starts, nor what value is stored at the location of where the arrow ends.

A binary tree
Linked List
ALL nodes @ EACH depth

an INNER class cannot be static
NESTED classes
STATIC
NON-STATIC
PUBLIC
PRIVATE

proj 1, proj2, proj3, ...., projn
dependencies(proj1 is depended on by proj2) (proj(n-1), projn)


topological sort for every edge (a, b) a appears before b in the linear order

MUST BE ABLE TO PICTURE THE DATA STRUCTURES ONE USES TO MANIPULATE THE PROBLEM

WEBPACK replace Gulp Grunt  
      Module loader: require.js, browserify

NODE JS: playform javascript runtime event driven non blocking input outupd data intensive real-time app run across distributed devices  SERVER SIDE networking apps

React creates class    html with html element property
ReactDOM renders   html, get dom element



FLASK




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