use strict;
my $str = 'The [#{product.name}](/card-details/card-name/#{details.slug.value}) which has an annual fee of #{details.annual_fee.value}, does double-duty as a rewards credit card and a balance transfer credit card. You’ll get a big sign-up bonus: Discover will automatically double cash back for new card holders in your first year. Plus, when you opt in to a bonus rewards program, this card earns 5% cash back on rotating bonus categories like gas and restaurants. Be aware that these 5% rewards are capped at $1,500 spent per quarter. On all other purchases, you’ll get 1% cash back. There is #{details.pros_bullets.value.1} and it comes with a generous 0% APR offer: #{details.apr_intro_message_list.value.0}. The card charges a 3% balance transfer fee, and Discover isn’t widely accepted abroad. But it could be a great choice if you’re trying to earn big rewards on new purchases while paying off an old debt.';
my $regex = qr/#{(\w+[.\w+]+)\}/p;
if ( $str =~ /$regex/g ) {
print "Whole match is ${^MATCH} and its start/end positions can be obtained via \$-[0] and \$+[0]\n";
# print "Capture Group 1 is $1 and its start/end positions can be obtained via \$-[1] and \$+[1]\n";
# print "Capture Group 2 is $2 ... and so on\n";
}
# ${^POSTMATCH} and ${^PREMATCH} are also available with the use of '/p'
# Named capture groups can be called via $+{name}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Perl, please visit: http://perldoc.perl.org/perlre.html