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  1. or download this
    open file.xml ;
    $h := hash . //@* ;
    echo { join "\n", keys $h } ;
    
  2. or download this
    #! /usr/bin/perl
    use warnings;
    ...
    }
    
    print "$_\n" for keys %h;
    
  3. or download this
    //*[not(./*)]/@*
    
  4. or download this
    #! /usr/bin/perl
    use warnings;
    ...
        values %{ $xml->{tags}[0] }
    } = ();
    say for keys %h;
    
  5. or download this
    ($q=q:Sq=~/;[c](.)(.)/;chr(-||-|5+lengthSq)`"S|oS2"`map{chr |+ord
    }map{substrSq`S_+|`|}3E|-|`7**2-3:)=~y+S|`+$1,++print+eval$q,q,a,