Regular Expressions

Variable Interpolation of Match Expressions

• It is possible to use the contents of a scalar for a match expression.
• The variable interpolation of a match string happens before any of the special characters are interpreted.
• Once the interpolation has taken place, the expression is evaluated as normal.
• Example:
  

  # Multigenderfier
  $theVar = "iT";
  $theMatch = "he|she|it"
  if ($theVar =~ /$theMatch/i) {
      (print "Match One\n");  # Would Match
  }
  $theVar = "HE";
  if ($theVar =~ /$theMatch/i) {
      (print "Match One\n");  # Would Match
  }