Change: 

  @files = sort { lc(${@$a}[0]) cmp lc(${@$b}[0]) } @$refdataarr ;

[download]

To: 

  @files = sort { lc $a->[0] cmp lc $b->[0] } @$refdataarr ;

[download]

You are dereferencing the array reference in $a and $b as @$a and @$b and then trying to dereference that array as an array reference.

In reply to Re: "strict" violation on "sort" command with perl 5.10 by jwkrahn
in thread "strict" violation on "sort" command with perl 5.10 by mstet

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