memoize.js

/**
https://lodash.com/docs/4.17.4#memoize

Create a function that saves previous results of past calls.
Example:
function add(x,y) {
  return x + y
}

const memoizedAdd = memoize(add);
memoizedAdd(1,2) returns 3;
memoizedAdd(2,3) returns 5;
memoizedAdd(1,2) returns 3, but never called add to figure that out.
*/

function memoize(func) {
}