Code snippets

137 snippets

• PHP Tested

  Slugify a string in PHP

  Create URL-safe lowercase slugs from titles, removing accents and punctuation.

• JavaScript Tested

  Slugify a string for URLs

  Convert any title into a lowercase, hyphenated, accent-free slug that is safe to use in a URL.

• Python Tested

  Sliding window over an iterable

  Yield overlapping windows of fixed size, useful for moving averages and n-grams.

• JavaScript Tested

  Sleep / delay with a Promise

  Pause an async function for a number of milliseconds, with optional cancellation through AbortSignal.

• JavaScript Tested

  A tiny event emitter

  Publish and subscribe to named events in about 15 lines, with an unsubscribe function returned from on().

• Python Tested

  Sign API requests with HMAC-SHA256

  Create and verify a timestamped signature over the method, path and body so requests cannot be forged or replayed.

• CSS

  CSS-only scroll-snap carousel

  A horizontally scrolling gallery that snaps to each card, with no JavaScript.

• TypeScript Tested

  Check an object against a type with satisfies

  Validate a config object against an interface while keeping its precise literal types.

• PHP Tested

  Retry a callable with exponential backoff in PHP

  Re-run flaky operations with growing delays and jitter, only for chosen exception types.

• Bash

  Retry a shell command with backoff

  Re-run a flaky command a few times with increasing delays and a clear failure exit code.

• JavaScript Tested

  Respect Retry-After on 429 and 503 responses

  Retry rate-limited requests after the delay the server asks for, instead of guessing.

• CSS

  Respect prefers-reduced-motion

  Turn off or shorten animations for users who ask their system for less motion.