Regex Cookbook for Developers — 50 Practical Patterns

50 practical regex patterns for common developer tasks. Copy-paste ready, tested, and organized by use case.

What's inside:

• Validation patterns — email, URL, phone, IP, UUID, ISO date, credit card, password

• Extraction patterns — URLs, emails, hashtags, numbers, currency, HTML tags, markdown

• Cleaning & transforming — strip HTML, collapse whitespace, mask PII, camelCase↔snake_case

• Splitting & tokenizing — CSV, multi-delimiter, sentence, word

• Log parsing — Apache/Nginx, Python logging, stack traces

• File & path patterns — extensions, Windows/Unix paths, Docker images, Git SHAs

• Advanced — balanced parens, JSON keys, SQL columns

All patterns work in Python, JavaScript, Ruby, Go, Perl, and any PCRE-compatible engine.

Includes production tips: compiling patterns, avoiding catastrophic backtracking, edge cases to test, when to prefer real parsers.

Format: PDF, ~50 pages of copy-paste-ready content. Lifetime access.