React Hooks: A transition of functions from stateless to stateful components

useState -

const [state, setState] = useState(initialState)
  1. We need a way to add a todo item in our todo list.
  2. We need a way to update the status of our todo item.
  1. Functional updates:
    If the new state is related to the old state, then it's a good practice to pass a function to the setState. One of the problems that I solved using this is mentioned in one of my previous blog.
  2. Lazy initial state:
    It is a state used during the initial render. For more info on this, visit https://reactjs.org/docs/hooks-reference.html#lazy-initial-state

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