Without seeing the actual code I can't help you with the details, but the general idea is correct:
#!/usr/bin/perl
use warnings;
use strict;
use feature qw{ say };
use enum qw( DATE TIME );
my @reservations = ([ '2020-03-21', '2:00 pm' ],
[ '2020-03-21', '3:00 pm' ],
[ '2020-03-22', '2:00:pm' ]);
my $last_date = "";
for my $reservation (@reservations) {
print $last_date eq $reservation->[DATE] ? ' ' x 10 : $reservation
+->[DATE];
say ' ', $reservation->[TIME];
$last_date = $reservation->[DATE];
}
Output:
2020-03-21 2:00 pm
3:00 pm
2020-03-22 2:00:pm
map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]
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