Q231. Why is semantic HTML preferred over divs with ARIA?
Semantic HTML uses elements that describe meaning: header, nav, main, section, article, aside, footer, button, label, table and ul. Assistive technologies and browsers de...
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Q232. What is INP and how do you reduce it?
Interaction to Next Paint measures the time from a user interaction such as a click, tap or key press until the browser paints the next frame, across the whole visit, rep...
Q233. How do you write a custom Tailwind plugin?
A plugin is a function passed to plugins in the config. It receives helpers including addUtilities, addComponents, addBase, addVariant, matchUtilities and theme. ```js co...
Q234. How does SvelteKit routing and data loading work?
SvelteKit uses filesystem routing under src/routes. A +page.svelte renders a page, +page.js or +page.server.js exports a load function that runs before the page and retur...
Q235. How does data fetching and caching work in the App Router?
You fetch inside async Server Components using the extended fetch: ```ts const res = await fetch('https://api.example.com/posts', { next: { revalidate: 60, tags: ['posts'...
Q236. When should you use the OnPush change detection strategy?
With the default strategy Angular checks a component on every change-detection run triggered by any event, timer or XHR inside the zone. ChangeDetectionStrategy.OnPush te...
Q237. Explain the difference between computed, watch and watchEffect.
computed derives a cached value from reactive dependencies. The getter re-evaluates only when a dependency changes and something reads the value, which makes it ideal for...
Q238. How do you make a Bash script fail fast and clean up with trap?
Robust scripts fail fast and release resources. ```bash #!/usr/bin/env bash set -euo pipefail cleanup() { rm -f "$tmp"; echo "cleaned" >&2; } tmp=$(mktemp) trap cleanup E...
Q239. What is the difference between a block, a proc and a lambda?
All three are chunks of code, but they differ in argument checking and how `return` behaves. - A `block` is passed to a method with `do...end` or braces and is not a stan...
Q240. Explain ARC and how retain cycles happen.
Swift uses Automatic Reference Counting: each class instance has a reference count and is deallocated when the count reaches zero. ARC is deterministic, unlike a tracing ...