JavaScript Memoization

What is Memoization?

Cache function results:

function memoize(fn) {
  const cache = {};
  return function(...args) {
    const key = JSON.stringify(args);
    if (cache[key]) return cache[key];
    cache[key] = fn(...args);
    return cache[key];
  };
}

Key Takeaway

Memoization caches results. Avoids redundant calculations. Improves performance for expensive functions.