my @array = (
  { name => 'foo', value => 1 },
  { name => 'bar', value => 2 },
  { name => 'baz', value => 3 }
);

##</code><code>##

[% FOREACH element IN array.sort('name') %]   
[% element.name %]
[% END %]

##</code><code>##

[% PERL %]
my $copy;
@{$copy} = $stash->get('array');
if (ref($copy) eq 'ARRAY') {
  $stash->set('copy', sort { $a->{'name'} cmp $b->{'name'} } @{$copy});
}
[% END %]
[% FOREACH element IN copy %]
[% element.name %]
[% END %]