1 files changed, 20 insertions, 57 deletions
diff --git a/ponysaylinklist.pl b/ponysaylinklist.pl
index ec6ff9b..4d34928 100755
--- a/ponysaylinklist.pl
+++ b/ponysaylinklist.pl
@@ -9,64 +9,27 @@
 # Author: Mattias Andrée, maandree@kth.se
 
 
-%hash = ();
-$argc = @ARGV;
-
-$i = 0;
-while ($i < $argc)
-{
-    $source = $ARGV[$i];
-    $i += 1;
-    $target = $ARGV[$i];
-    $i += 1;
-    if ($source eq $target)
-    {
-        $hash{$source} = [ () ];
-    }
-}
-
-$i = 0;
-while ($i < $argc)
-{
-    $source = $ARGV[$i];
-    $i += 1;
-    $target = $ARGV[$i];
-    $i += 1;
-    unless ($source eq $target)
-    {
-        push @{ $hash{$target} }, $source;
-    }
+use strict;
+use warnings;
+use utf8;
+use List::MoreUtils qw(natatime);
+
+my %hash;
+
+my $it = natatime 2, @ARGV;
+while (my ($source, $target) = &$it) {
+	unless ($source eq $target) {
+		push @{$hash{$target}}, $source;
+	}
 }
 
-$i = 0;
-while ($i < $argc)
-{
-    $source = $ARGV[$i];
-    $i += 1;
-    $target = $ARGV[$i];
-    $i += 1;
-    if ($source eq $target)
-    {
-        @list = @{ $hash{$source} };
-        $first = 1;
-        print $source;
-        foreach $link (@list)
-        {
-            if ($first eq 1)
-            {
-                print " (".$link;
-                $first = 0;
-            }
-            else
-            {
-                print " ".$link;
-            }
-        }
-        if ($first eq 0)
-        {
-            print ")";
-        }
-        print "\n";
-    }
+$it = natatime 2, @ARGV;
+while (my ($source, $target) = &$it) {
+	if ($source eq $target) {
+		my @list = @{$hash{$source} // []};
+		print $source;
+		print ' (', join(' ', @list), ')' if @list;
+		print "\n";
+	}
 }