Brandon Himpfen brandonhimpfen

Writer, developer, and founder creating open-source tools, datasets, and resources across travel and technology.

brandonhimpfen / node-read-large-file-line-by-line.js

Created February 25, 2026 18:08

Read a large file line-by-line in Node.js using streams + readline (memory efficient, backpressure-friendly).

	#!/usr/bin/env node
	/**
	* Read a large file line-by-line (streams) in Node.js.
	*
	* Usage:
	* node node-read-large-file-line-by-line.js ./bigfile.txt
	*
	* Notes:
	* - Uses streams to avoid loading the entire file into memory.
	* - readline provides a clean async iterator interface.

brandonhimpfen / python-sqlite-migrations-no-deps.py

Created February 22, 2026 20:07

Dependency-free SQLite migrations for Python: migrations table + apply migrations in order with transaction safety.

	#!/usr/bin/env python3
	"""
	Basic SQLite migrations runner (no dependencies).

	Pattern:
	- Keep a list of migrations (id, name, sql)
	- Store applied migrations in a table: schema_migrations
	- Apply missing migrations in order inside a transaction

	Good for:

brandonhimpfen / python-sqlite-helper.py

Created February 22, 2026 20:05

Basic SQLite helper for Python: connect with sensible defaults, execute/query helpers, and dict-like rows (no deps).

	#!/usr/bin/env python3
	"""
	Basic SQLite helper (no dependencies).

	Features:
	- Context-managed connection
	- Row results as dict-like objects (sqlite3.Row)
	- Helpers for execute / executemany / fetchone / fetchall
	- Optional pragmas for better defaults

brandonhimpfen / bash-retry-with-jitter.sh

Created February 15, 2026 21:05

Bash retry helper with exponential backoff + random jitter (useful for distributed systems and flaky network calls).

	#!/usr/bin/env bash
	# -----------------------------------------------------------------------------
	# Bash retry helper with exponential backoff + jitter
	# -----------------------------------------------------------------------------
	# Why jitter?
	# - If many clients retry at the same fixed interval, they can synchronize and
	# cause thundering herds. Jitter spreads retries out randomly.
	#
	# Usage:
	# retry_jitter <attempts> <base_delay_seconds> <max_delay_seconds> <command...>

brandonhimpfen / bash-retry.sh

Created February 15, 2026 21:03

Bash retry helper to retry a command N times with delay and optional exponential backoff (strict-mode friendly).

	#!/usr/bin/env bash
	# -----------------------------------------------------------------------------
	# Bash retry helper
	# -----------------------------------------------------------------------------
	# Usage:
	# retry <attempts> <delay_seconds> <command...>
	#
	# Example:
	# retry 5 2 curl -f https://example.com
	#

brandonhimpfen / html-responsive-images-srcset-sizes.html

Created February 8, 2026 23:00

Responsive image patterns using srcset + sizes (with WebP/AVIF via <picture>), plus practical examples for width- and density-based images.

	<!doctype html>
	<html lang="en">
	<head>
	<meta charset="utf-8" />
	<meta name="viewport" content="width=device-width, initial-scale=1" />
	<title>Responsive Images: srcset + sizes</title>
	<style>
	/* Demo-only styling */
	.container { max-width: 900px; margin: 2rem auto; padding: 0 1rem; }
	img { max-width: 100%; height: auto; display: block; border-radius: 12px; }

brandonhimpfen / html-accessible-modal-minimal.html

Created February 8, 2026 22:59

Minimal accessible HTML modal markup (ARIA + focus target) with a tiny JS controller (open/close + Escape + backdrop click).

brandonhimpfen / go-http-post-json-context.go

Created February 1, 2026 21:09

Go POST JSON with context + timeouts, decode JSON response, and safe body limits (idiomatic net/http).

 package main
 import (
 	"bytes"
 	"context"
 	"encoding/json"
 	"fmt"
 	"io"
 	"log"
 	"net"

brandonhimpfen / go-http-client-timeout-context.go

Created February 1, 2026 21:08

Go HTTP client example with context cancellation + sensible timeouts, returning response body safely (idiomatic net/http).

 package main
 import (
 	"context"
 	"fmt"
 	"io"
 	"log"
 	"net"
 	"net/http"
 	"time"

brandonhimpfen / bash-extract-archive.sh

Created January 24, 2026 19:56

Bash extract() helper to extract most archive formats (.zip, .tar.gz, .7z, .rar, etc.) with safe checks and readable errors.

	#!/usr/bin/env bash
	# -----------------------------------------------------------------------------
	# Extract any archive (zip, tar.gz, tgz, tar.bz2, tar.xz, 7z, rar, etc.)
	# -----------------------------------------------------------------------------
	# Usage:
	# ./bash-extract-archive.sh file.tar.gz
	# source this file and call: extract "file.zip"
	#
	# Requirements (depending on format):
	# - tar, unzip, gzip/bzip2/xz, 7z, unrar, cabextract