Where Developers Share Their Thoughts

const useLocalStorage = (key, initialValue) => {
  const [storedValue, setStoredValue] = useState(() => {
    try {
      const item = window.localStorage.getItem(key);
      return item ? JSON.parse(item) : initialValue;
    } catch (error) {
      console.log(error);
      return initialValue;
    }
  });

  const setValue = value => {
    try {
      setStoredValue(value);
      window.localStorage.setItem(key, JSON.stringify(value));
    } catch (error) {
      console.log(error);
    }
  };

  return [storedValue, setValue];
};

def timing_decorator(func):
    def wrapper(*args, **kwargs):
        start_time = time.time()
        result = func(*args, **kwargs)
        end_time = time.time()
        print(f"{func.__name__} took {end_time - start_time:.2f} seconds")
        return result
    return wrapper

@timing_decorator
def expensive_operation():
    time.sleep(1)
    return "Operation completed"

const numbers = [1, 2, 3, 4, 5];

const doubled = numbers
  .map(num => num * 2)
  .filter(num => num > 5)
  .reduce((acc, curr) => acc + curr, 0);

console.log(doubled); // Output: 28