HTML

Breadcrumb Navigation (with Schema)

A keyboard- and screen-reader-friendly breadcrumb. The `aria-label="Breadcrumb"` on `<nav>` announces the role; `aria-current="page"` marks the final segment. Add the JSON-LD for Google's rich result.

1m ago 0

Java

Atomic File Write (move with ATOMIC_MOVE)

Write to a temp file in the same directory, then `Files.move` with `ATOMIC_MOVE` to the target. Readers never see a half-written file — critical for config / state files.

1m ago 0

Go

time.Ticker — Periodic Tasks

`time.NewTicker(d)` fires on a channel every `d` interval. Combine with select + a done channel for a clean way to run periodic work that can be cancelled.

1m ago 0

Java

Collectors.groupingBy — Group by Key

Like SQL GROUP BY for streams. Produces a `Map<K, List<V>>` (or any downstream collector you specify). Indispensable for analytics-style aggregations.

1m ago 0

Python

Generate Strong Random Password

Build a password using the `secrets` module (CSPRNG) with rejection sampling for unbiased distribution. Use this — NOT random.choice, which is seeded predictably.

1m ago 0

Rust

String vs &str — The Cheat Sheet

`String` is an owned, growable heap allocation; `&str` is a borrowed view into a UTF-8 buffer. Function params should usually take `&str`; return types use `String` when ownership is needed.

1m ago 0

Kotlin

Exposed — Kotlin-First ORM

JetBrains' Exposed combines a SQL DSL with a lightweight ORM. Either style is fully type-safe; both compile to plain SQL.

1m ago 0

Python

Timing Decorator with Logger

Drop @timed on any function and get its wall-clock duration logged on every call. Uses functools.wraps so introspection (name, docstring, signature) still works.

1m ago 0

PHP

Verify a JWT (HS256)

Pair to jwtSign: verify the signature, check the exp claim, and return the decoded payload — or null on any failure. Uses hash_equals for constant-time signature comparison.

1m ago 0

Bash

Print Environment Variables Matching Pattern

Quick audit of env vars by prefix — useful when debugging containerized apps that read from `STRIPE_*`, `DB_*`, etc.

1m ago 0

Rust

mpsc Channel Between Threads

`std::sync::mpsc` is the standard cross-thread channel. Multiple producers, single consumer. Send any `Send` type; the receiver blocks on `recv()` until something arrives.

1m ago 0

Rust

Threads with thread::spawn + join

Native OS threads with `std::thread::spawn`. The returned `JoinHandle` lets you wait for the thread and get its return value. Use `move` to transfer ownership of captured variables.

1m ago 0

Kotlin

apply — Configure Object, Return Itself

`x.apply { ... }` runs the block with `x` as `this` (so you call methods/set properties directly) and returns `x`. The canonical builder-style configuration.

1m ago 0

HTML

Skip-to-Main-Content Link

Keyboard users (and screen-reader users) tab through every nav link before reaching content. A skip-link as the first focusable element jumps straight to <main>. Required for WCAG 2.1 AA.

1m ago 0

TypeScript

Template Tag for Safe HTML

Build HTML strings with a tagged template literal that auto-escapes every interpolated value. Eliminates a class of XSS bugs without pulling in a templating library.

1m ago 0

Kotlin

Compose Modifier Chain

`Modifier` is how you customize composables — padding, click handlers, background, size, alignment. Order matters: each modifier wraps the previous one.

1m ago 0

Bash

Check If Port Is Open

Several ways to probe a remote port: nc (most portable), bash's /dev/tcp pseudo-device (zero deps), or curl. Pick by what's available.

1m ago 0

PHP

URL-Safe Base64 Encode / Decode

Standard base64 uses + and / which break in URLs. Swap them for - and _, drop the = padding, and you get a string you can put in path segments and query parameters safely.

1m ago 0

Bash

Pretty-Print JSON from cURL

Pipe API responses through jq for syntax-colored, indented output. Also great for extracting specific fields without writing a parser.

1m ago 0

HTML

Navigation with aria-current

Use `<nav>` for primary navigation. Mark the currently-active link with `aria-current="page"` — screen readers will announce it, and you get a free CSS hook with `[aria-current]`.

1m ago 0

HTML

Picture Element — Art Direction

`<picture>` lets you serve DIFFERENT images at different breakpoints — not just different sizes of the same crop. Perfect for a wide desktop banner that becomes a square mobile poster.

1m ago 0

HTML

Radio Group with Fieldset + Legend

Always wrap radio groups (and checkboxes that share semantics) in a `<fieldset>` with a `<legend>`. Screen readers announce the legend before each option — without it, the choice is contextless.

1m ago 0

Go

text/template — Simple Templating

Stdlib templating with `{{.Field}}` placeholders, range loops, if/else, and function pipelines. Safe alternative for non-HTML text (e.g. emails, config files).

2m ago 0

Java

Builder Pattern

For objects with many optional parameters, a Builder beats a constructor with 12 args (or a half-initialized object you have to call setters on). Method chaining + a `build()` step that validates.

2m ago 0

PHP

Pretty-Print JSON

One-liner wrapper around json_encode with the right flags: indented, no escaped slashes, no escaped unicode. Use it everywhere instead of raw json_encode for human-readable output.

2m ago 0

Python

requests Session with Retry + Timeouts

A pre-configured requests.Session that auto-retries 5xx + connect errors with exponential backoff, applies a default timeout, and uses connection pooling. Use this everywhere instead of bare requests.get().

2m ago 0

SQL

Recursive CTE — Date Spine Generator

Generate a row per day (or month, year, hour) without a calendar table. Useful for filling gaps when a date has no events but you still want it in your output.

2m ago 0

Java

CountDownLatch — Wait for N Events

Block one or more threads until a count of events occurs. Set the count up front; each event calls `countDown()`; waiters call `await()`. Classic "wait until all workers are ready" pattern.

2m ago 0

PHP

Validate Uploaded File

A defense-in-depth check for $_FILES uploads: confirms the upload completed, the size is within bounds, the MIME type matches an allow-list (by libmagic, not by extension), and the file landed where PHP expected.

2m ago 0

HTML

Card Pattern (article + link wrapper)

The standard content card — image, title, excerpt, meta. Make the WHOLE card clickable by wrapping the title link and using `::after` to extend the hit area to the full card.

2m ago 0