Cryptic Ruby Global Variables and Their Meanings

The linked page lists and explains global Ruby "dollar" variables, such as:

  • $: (load path)
  • $* (ARGV)
  • $? (Last exit status)
  • $$ (PID)
  • $~ (MatchData from last successful match)
  • ...and many more you'll need when reading weird code.

Regex

  • $~ (last MatchData)
  • $1 $2 $3 $4 (match groups from the last pattern match)
  • $& (last matched string)
  • $+ (last match group)
  • `$`` (the string before the last match)
  • $' (the string after the last match

See this extensive list of variables Archive .

Arne Hartherz about 8 years ago
This website uses short-lived cookies to improve usability.
Accept or learn more