JavaScript

Scroll to Element Smoothly

Scrolls the page to a target element with an optional pixel offset (useful when a fixed header is present). Uses the native scrollIntoView with smooth behaviour when supported, and falls back to a manual scrollTo with a configurable offset. Pass a CSS selector string or an Element reference.

Jun 16, 2026 0

Kotlin

Data Classes — Records Done Right

`data class` auto-generates `equals`, `hashCode`, `toString`, `copy`, and `componentN` (destructuring). Replaces boilerplate POJOs / Records / classes-with-lombok in one line.

Jun 16, 2026 0

Bash

Substring + Find/Replace (parameter expansion)

Bash's ${var:offset:length} and ${var//pattern/replacement} let you do most string operations without ever spawning sed. Faster, and the syntax is portable across modern shells.

Jun 16, 2026 0

Go

net/url — Build Query Strings Safely

Stop concatenating `?a=1&b=2` by hand. `url.Values` (a `map[string][]string`) escapes correctly, handles repeated keys, and `url.URL.String()` renders the canonical form.

Jun 16, 2026 0

PHP

Atomic Counter with flock

A single-file counter that survives concurrent increments correctly using flock + read-modify-write inside the locked region. Useful for crude visitor or job-id counters when you don't want a DB.

Jun 16, 2026 0

Kotlin

Sealed Classes — Closed Type Hierarchies

`sealed` restricts subclassing to the same module. Combined with exhaustive `when`, the compiler enforces handling of every variant — refactor-friendly state machines.

Jun 16, 2026 0

Java

Records — Concise Data Classes (Java 16+)

`record` generates a constructor, accessors, `equals`, `hashCode`, and `toString` from a one-line declaration. Replaces 50 lines of POJO boilerplate. Records are implicitly final and immutable.

Jun 15, 2026 0

PHP

Levenshtein Similarity Percentage

Wrap PHP's built-in levenshtein() to return a similarity score from 0.0 (totally different) to 1.0 (identical). Handy for "did you mean…?" suggestions.

Jun 15, 2026 0

Go

flag — Stdlib CLI Parser

The `flag` package is the minimal-dep CLI parser shipped with Go. Sufficient for many tools; reach for `spf13/cobra` or `urfave/cli` for subcommands and richer UX.

Jun 15, 2026 0

JavaScript

Long Polling Helper

Implements a long-polling loop that repeatedly calls a fetch endpoint and invokes a callback with the result. Backs off exponentially on errors and stops cleanly when cancelled via the returned stop function. A simple alternative to WebSockets for low-frequency server-push events without SSE support.

Jun 15, 2026 0

HTML

Hero Section

The big "above the fold" intro on a landing page: large heading, sub-copy, primary CTA, optional supporting image. Keep the H1 unique to the page and one per document.

Jun 15, 2026 0

HTML

Favicon Set (SVG + PNG fallbacks)

Modern favicon setup: one SVG that scales, an ICO fallback for old browsers, and an apple-touch-icon for iOS home screens. Skip the 12-file <link> dump from favicon generators of yore.

Jun 15, 2026 0

PHP

UTF-8 Safe substr / strlen

Wrap mb_* with sensible defaults so you stop accidentally chopping multi-byte characters in half. Defensive helpers for projects where input is not guaranteed ASCII.

Jun 15, 2026 0

JavaScript

UUID v4 Generator

Generates a RFC 4122 compliant version-4 UUID. Uses crypto.randomUUID() in modern environments (Node 14.17+, all modern browsers) and falls back to a Math.random()-based implementation for older runtimes. The fallback is suitable for non-security-critical IDs such as UI element keys and local correlation IDs.

Jun 15, 2026 0

SQL

INNER JOIN — Match Rows in Both Tables

Returns rows where the join condition matches in BOTH tables. The default JOIN. Use table aliases (`u`, `o`) for readability when joining 3+ tables.

Jun 15, 2026 0

Bash

Watch a File for Changes (no inotify dep)

inotifywait is great when available, but on systems without inotify-tools you can poll mtime. Cheap enough to use in dev/CI workflows.

Jun 15, 2026 0

TypeScript

Deferred / Externally-Resolvable Promise

Create a Promise whose `resolve` and `reject` are exposed externally. Useful when you need to settle a promise from outside its executor — e.g. waiting on an event-driven response.

Jun 14, 2026 0

Bash

Default Value for Unset Variable

Three parameter-expansion idioms for "use this if the variable is empty / unset". Replaces the verbose `if [[ -z "$VAR" ]]; then VAR=default; fi` everywhere.

Jun 14, 2026 0

SQL

NULLS FIRST / NULLS LAST

Control where NULLs land in an `ORDER BY`. PostgreSQL/Oracle default NULLs to LAST in ASC, FIRST in DESC; MySQL/SQL Server flip it. Be explicit if it matters.

Jun 14, 2026 0

Go

Prepared Statement Reuse

For repeated queries (loops, bulk inserts), prepare once and re-use. The driver caches the parsed query and saves a round trip per invocation.

Jun 13, 2026 0