##
$array[1];
##
##
$array->[1];
##
##
my @sorted=map {$_->[0]}
sort{$a->[1] <=> $b->[1]}
map {[$_,keyfunction($_)]} @list;
my $nasty=join(",",
map {$_->[0]}
sort{$a->[1] <=> $b->[1]}
map {[$_,keyfunction($_)]}
grep {/^\w/} @list
);