uniq elements of an array

[Ramprasad A Padmanabhan]

Hi All,
   I have been using perl on linux for quiet some time now and I have 
found that Perl does not work the same in windows

   eg. To get all the unique elements of an array in linux I use a 
simple  one liner

   @unique = grep{!/$seen{$_}++/} @all_elements;

But this does not even  pass syntax check on windows
Can Anyone tell me the best way how to get all the unique elements in an 
array preserving the same order


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