Q2231. What is destructuring assignment?
The destructuring assignment is a JavaScript expression that makes it possible to unpack values from arrays or properties from objects into distinct variables. Let's get ...
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Q2232. What are the best practices for using React Hooks?
Following best practices ensures your hooks are predictable, maintainable, and bug-free. #### 1. **Follow the Rules of Hooks** - Only call hooks at the top level (not ins...
Q2233. Webpack gives us a dependency graph. What does that mean?
Any time one file depends on another, webpack treats this as a dependency. This allows webpack to take non-code assets, such as images or web fonts, and also provide them...
Q2234. What are default values in destructuring assignment?
A variable can be assigned a default value when the value unpacked from the array or object is undefined during destructuring assignment. It helps to avoid setting defaul...
Q2235. What are the key features introduced in React 18?
React 18, released in March 2022, introduced several groundbreaking features focused on performance and user experience: #### 1. **Automatic Batching** Batch multiple sta...
Q2236. What are metaclasses in Python?
A metaclass is the class of a class. A class def ines how an instance of the class (i.e. an object) behaves while a metaclass def ines how a class behaves. A class is an ...
Q2237. How do you swap variables in destructuring assignment?
If you don't use destructuring assignment, swapping two values requires a temporary variable. Whereas using a destructuring feature, two variable values can be swapped in...
Q2238. What are the key features introduced in React 19?
React 19 (released 2024) brings major improvements for full-stack React applications: #### 1. **React Compiler (formerly React Forget)** Automatic memoization - no more m...
Q2239. How to make a chain of function decorators?
How can I make two decorators in Python that would do the following? ```python @makebold ``` @makeitalic ```python def say(): return "Hello" ``` which should return: "Hel...
Q2240. What are enhanced object literals?
Object literals make it easy to quickly create objects with properties inside the curly braces. For example, it provides shorter syntax for common object property definit...