Q131. When to use a Class Component over a Function Component?
After the addition of Hooks(i.e. React 16.8 onwards) it is always recommended to use Function components over Class components in React. Because you could use state, life...
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Q132. What is the difference between CMD and ENTRYPOINT?
Both define what runs when a container starts, but they behave differently. - ENTRYPOINT sets the executable. It is hard to override and defines the container's purpose. ...
Q133. What lifecycle functions does Svelte provide and when do you use tick?
Svelte components have a small lifecycle API. onMount runs once after the component is first rendered in the browser. It does not run during SSR, so it is the place for D...
Q134. How do you handle metadata and SEO in the App Router?
You export a static metadata object or a generateMetadata async function from a layout or page. It can set title, description, canonical URL, Open Graph, Twitter cards an...
Q135. What is the order of Angular lifecycle hooks?
Angular calls lifecycle hooks in a defined order. The constructor runs first and should only inject dependencies. Then ngOnChanges fires whenever a bound input changes, b...
Q136. What are the possible values for a BOOLEAN field in MySQL?
MySQL doesn't have a native `BOOLEAN` type. It uses `TINYINT(1)` where `0` = false, `1` = true, and any non-zero value is treated as true in conditions. ```sql CREATE TAB...
Q137. What is Python? What are the benefits of using Python?
Python is a programming language with objects, modules, threads, exceptions and automatic memory management. The benefits of pythons are that it is simple and easy, porta...
Q138. What is the difference between include, require, include_once and require_once?
- include: includes a file; on failure emits a warning and execution continues. - require: includes a file; on failure emits a fatal error and stops. - include_once / req...
Q139. What is HTML and what are it's basic components?
HTML (Hyper Text Markup Language) is the standard markup language for creating web pages. It's basics components includes element, tags and attribute.
Q140. What is TypeScript, and how does it differ from JavaScript?
TypeScript is a statically typed superset of JavaScript that adds optional static typing and other features to JavaScript. It differs from JavaScript by introducing type ...