Adding this sub: 
sub uniq_Roy { my %x; grep {!$x{$_}++} @_ }

[download]
I got these results 
                     Rate  uniq_Zaxo uniq_dragonchild uniq_BrowserUk  
+  uniq_Roy
uniq_Zaxo        167192/s         --             -19%           -27%  
+      -47%
uniq_dragonchild 205487/s        23%               --           -11%  
+      -35%
uniq_BrowserUk   230383/s        38%              12%             --  
+      -27%
uniq_Roy         317586/s        90%              55%            38%  
+        --

[download]
We're not really tightening our belts, it just feels that way because we're getting fatter.

In reply to Re^4: promoting array to a hash by Roy Johnson
in thread promoting array to a hash by sleepingsquirrel

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