in reply to Opening file and checking for data

I can't see anything wrong with your code, and 'tcf22's example looks fine too. Although I've never used it, for comparing which of a few different ways is most efficient, the 'Benchmark' module might be helpful. Do 
  perldoc Benchmark

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at a command prompt to see how to use it.

HTH.

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Re: Re: Opening file and checking for data
by hmerrill (Friar) on Jul 03, 2003 at 13:46 UTC
    In the Perl Cookbook recipe 3.9 'High-Resolution Timers' looks pretty useful for timing code - it uses the Time::HiRes module which comes standard in Perl 5.8: 
      use Time::HiRes qw(gettimeofday);
  $t0 = gettimeofday;

  ### your code here ###

  $t1 = gettimeofday;
  $elapsed = $t1 - $t0;
  # elapsed is a floating point value, representing the
  # number of seconds between $t0 and $t1

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    then do the same thing for the *other* way, and see which one takes the least amount of time.
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[d/l]

      If you want to benchmark your code, use Perl's Benchmark module. There's no need to reinvent it. Super Search should find numerous examples of how to use it.

      Update: I see you have already mentioned Benchmark. In future, I must read more carefully before repying. Bad me.

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