• Matching Email Addresses:

  • Extracting URLs from Text:

  • Parsing CSV Data:

  • Extracting Hash Tags from Social Media Posts:

  • Extracting HTML Tags from Text:

  • Validating IPv4 Addresses:

  • Matching Markdown Links:

  • Identifying Twitter Usernames:

  • Matching Scientific Notation:

  • Extracting YouTube Video IDs from URLs:

  • Extracting Dates from Text:

  • Identifying GitHub Repository Names:

  • Parsing Markdown Headings:

  • Extracting Currency Values:

  • Identifying Twitter Hashtags and Mentions:

  • Matching HTML Attributes:

  • Extracting File Extensions:

  • Matching JavaScript Function Calls:

  • Identifying Roman Numerals:

  • Extracting HTML Comments: