named_capture_groups

🏷️ Leverage Named Capture Groups

Named captures ((?<name>…)) make your regex more readable and your matches easier to refer to by name instead of index. Access them via MatchData#[] or the returned hash.

pattern = /(?<year>\d{4})-(?<month>\d{2})-(?<day>\d{2})/
md = pattern.match('2023-07-15')
md[:year]   # => "2023"
md['month'] # => "07"

Use named groups when you need clarity on which part of the string you captured.