http://www.perlmonks.org?node_id=240104


in reply to problems with split

The problem with your code is that the print statement is outside of the foreach loop (its outside of the curly braces which define the extent of the loop). To get it to print the second field on each line, this statement should be inside the loop so that it gets called for each line. 
# type value   value2
#  503  1093    4395

# load the data
@file = <FILE>;
# or use a while (defined(my $line = <FILE>)) { loop

for my $line (@file) { # for is the same as foreach
  my @fields = split (/\s+/, $line); # @file was being reused
  print "$fields[2]\n";
}

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integral, resident of freenode's #perl

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Re: Re: problems with split
by Anonymous Monk on Mar 03, 2003 at 18:23 UTC
    can I do this without the filehandles?? cheers ;->
[reply]
      You have to use a filehandle to read data in from a file, but for a simple program you can get away with using a <> to load data from the files listed in @ARGV (or STDIN if no files are given) with perl automatically opening them as needed. 
      while (<>) {
  print (split /\s+/)[2], "\n";
}

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