Database

Core regular expression syntax including character classes, quantifiers, anchors, and alternation

Practical regex patterns for validating emails, URLs, IP addresses, and other common string formats

Regex patterns for parsing structured and semi-structured log files from common servers, applications, and systems

Lookahead and lookbehind assertions for matching patterns based on surrounding context without consuming characters

Named capture groups for readable, maintainable regex patterns with structured data extraction

Regex performance optimization, catastrophic backtracking prevention, and engine internals for writing efficient patterns

Regex-powered find and replace patterns for text transformation, refactoring, and data reformatting

Regex patterns for extracting structured data from unstructured or semi-structured text sources