6. Basic Memoization Example from FrontEndMasters

Memoiazation

const times10 = (num) => {
  const a = num * 10;
  return a;
};
console.log(`~~~~~~~~TASK 1~~~~~~~~`);
console.log(`times10 returns: ${times10(9)}`);

const cache = {};
const memoTimes10 = (n) => {
  if (n in cache) {
    console.log(`Fetchig from cache ${n}`);
    return cache[n];
  } else {
    console.log(`Calculating result`);
    let result = times10(n);
    cache[n] = result;
    return result;
  }
};

console.log(`~~~~TASK 2~~~~~`);
console.log(`T2 calculated value: ${memoTimes10(9)}`);
console.log(`T2 cached value: ${memoTimes10(6)}`); //change it back to 9 to test it