Q2191. How will you convert an integer to a Unicode character?
This is simple. All we need is the chr(x) built-in function. See how. ```python >>> chr(52) ``` '4' ```python >>> chr(49) ``` '1' ```python >>> chr(67) ``` 'C'
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Q2192. How do you create an infinite loop?
You can create infinite loops using for and while loops without using any expressions. The for loop construct or syntax is better approach in terms of ESLint and code opt...
Q2193. Does useMemo prevent re-rendering of child components?
The `useMemo` hook **does not directly prevent re-rendering of child components**. Its main purpose is to memoize the result of an expensive computation so that it doesn’...
Q2194. So does recursion cause any trouble?
Sure does: Needs more function calls. Each function call stores a state variable to the program stack- consumes memory, can cause memory overflow. Calling a function cons...
Q2195. Why do you need to avoid with statement?
JavaScript's with statement was intended to provide a shorthand for writing recurring accesses to objects. So it can help reduce file size by reducing the need to repeat ...
Q2196. What is `useCallback` and why is it used?
The `useCallback` is a React Hook used to memoize **function definitions** between renders. It returns the same function reference unless its dependencies change. This is...
Q2197. What good is recursion?
**Recursion** is a programming technique where a function solves a problem by calling itself with smaller sub-instances of the same problem until reaching a **base case**...
Q2198. What is the output of the following for loops?
```javascript for (var i = 0; i < 4; i++) { // global scope setTimeout(() => console.log(i)); } for (let i = 0; i < 4; i++) { // block scope setTimeout(() => console.log(...
Q2199. What are Custom React Hooks, and How Can You Develop One?
**Custom Hooks** in React are JavaScript functions that allow you to **extract and reuse component logic** using React’s built-in Hooks like `useState`, `useEffect`, etc....
Q2200. Can you remove the whitespaces from the string "aaa bbb ccc ddd eee"?
I can think of three ways to do this. Using join- ```python >>> s='aaa bbb ccc ddd eee' ``` >>> s1=".join(s.split()) ```python >>> s1 ``` 'aaabbbcccdddeee' Using a list c...