Revered monks,
I am trying to compare 2 simple arrays @file and @file2.

After the comparision I need:

  1. matched elments
  2. elements in @file1 not in @file2 and
  3. elements in @file2 not in @file1

I am using the following code... Is this the best way of doin it??? is there a optimization or even a direct function for this?

%seen = ();
@seen{ @file1 } = ();
@infile1only = grep { ! exists $seen{$_} } @file2;

%seen =();
@seen{ @file2 } = ();
@infile2only =  grep { ! exists $seen{$_} } @file1;

@matched = grep { exists $seen{$_} } @file1;

[download]

thanks,
narashima

In reply to optimal way of comparing 2 arrays by narashima

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