Q731. Explain the concept of type guards in TypeScript.
Type guards in TypeScript are checks that help determine the type of a variable. They help TypeScript understand the specific type of the variable, making your code safer...
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Q732. What is memoization?
Memoization is a functional programming technique which attempts to increase a function’s performance by caching its previously computed results. Each time a memoized fun...
Q733. What is children prop?
The `children` prop is a special prop in React used to pass elements between the opening and closing tags of a component. It is commonly used in layout and wrapper compon...
Q734. How do you navigate programmatically in Next.js?
Using useRouter() hook. ```jsx const router = useRouter(); function handleClick() { router.push(`/path`); } Go There; jsx router.push(href: string, { scroll: boolean }) `...
Q735. What are the caveats of object changes detection?
Vue cannot detect changes for the object in property addition or deletion. Lets take an example of user data changes, ```javascript var vm = new Vue({ data: { user: { nam...
Q736. Which operator selects values in a range?
The **`BETWEEN`** operator selects values within an inclusive range (numbers, text strings, or dates): ```sql SELECT product_id, name, price FROM products WHERE price BET...
Q737. What Is Docstring In Python?
A docstring is a unique text that happens to be the first statement in the following Python constructs: Module, Function, Class, or Method def inition. A docstring gets a...
Q738. What is the purpose of the <meta> tag in HTML?
The `` tag is used to provide additional information about the webpage, such as author, keywords, description which is used by search engines to understand the content of...
Q739. What is the `keyof` operator in TypeScript?
The `keyof` operator in TypeScript is used to get a union type of all the keys (property names) of an object type. It allows you to access and use the keys of an object t...
Q740. What is Hoisting?
Hoisting is JavaScript's default behavior where **variable and function declarations** are moved to the top of their scope before code execution. This means you can acces...