Port of Perl's index() / rindex() built-ins

Raku port of Perl's lc() / uc() built-ins

Raku port of Perl's lcfirst() / ucfirst() built-ins

Raku port of Perl's length() built-in

Raku port of Perl's localtime() / gmtime() built-ins

Port of Perl's math built-ins to Raku

Raku port of Perl's opendir() and related built-ins

Raku port of Perl's pack() / unpack() built-ins

Raku port of Perl's print() and associated built-ins

Raku port of Perl's push() / pop() built-ins