Anonymous avatar Anonymous committed d647c4a

A small optimisation of reusing variables.

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     while (@dfs_stack)
+        my $last_state = $dfs_stack[-1];
+        my $l = $last_state->{layout};
         if (@dfs_stack == $BOARD_SIZE)
-            return $dfs_stack[-1]->{layout};
+            return $l;
-        my $last_state = $dfs_stack[-1];
-        my $l = $last_state->{layout};
         # TODO : remove these traces later.
         # print "Depth = " . scalar(@dfs_stack) . "\n";
         # print "Last state = " . Dumper($last_state) . "\n";
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