$VAR1 = {
    clock => 'blah/1',
    pin => 'blah/2',
    net => 'blah/3',
    clock_skew => '0.100',
    longest_delay => '1.000',
    shortest_delay => '1.100',
};

##</code><code>##

my @values = generate_data_from_some_datasource($data_source);
# @values is now an array of hashrefs, each looking like the one above

my @sorted_values = sort { $a->{clock} cmp $b->{clock} } @values;