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Perl report problem...

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# 15  
Old 07-04-2008
Yes, the script adds the output file Smilie.

Add this line:

Code:
next if $_ eq $report_dir.$outfile;

Like this:

Code:
#!/usr/bin/perl

# you should always use these in a script
use warnings;
use strict;

my %data;
my @flds=();
my $report_dir = '/export/home/L86898/MYDATA/PREREQUISITS/20080430/REPORTS/';
my ($ext, $outfile) = ('.csv', 'Summary_by_TestScript.csv');
while (<$report_dir*$ext>) {
  next if $_ eq $report_dir.$outfile;
  open IN, $_ or warn "Error openning $_: $!\n" and next;
  while (<IN>) {
    @flds[1,2] = split ';';
    $data{$flds[1]} += $flds[2];
    }
  close IN;
}

open OUT, '>', $report_dir.$outfile or die "Error creating output file: $!\n";
print OUT map {"$_;$data{$_}\n"} sort keys %data;

# 16  
Old 07-04-2008
MySQL
Great, thats why I trust you...Smilie

Thanks again (pls dont get bored for these thanks) Radoulov.

With Best Regards / Mysore Ganapati
# 17  
Old 07-04-2008
I'm glad to be of help and to exercise my newly acquired Perl skills Smilie
# 18  
Old 07-07-2008
Hi Radoulov,

Sorry for my stupid question. But I failed understand the answers from the perl study material regarding "map" function.

Could you please explain me what exactly the below code of line is doing using map() ? Are there any other ways to do the same thing without using map() ?
One of my friend has asked this question, but I's failed to answer him also failed to understand from perl book...

print OUT map {"$_;$data{$_}\n"} sort keys %data;

Sorry for the pain again and again...
Last edited by ganapati; 07-07-2008 at 09:07 AM..
# 19  
Old 07-07-2008
Quote:
Could you please explain me what exactly the below code of line is doing using map() ? Are there any other ways to do the same thing without using map() ?
I'm not able to give better explanation than this one,
it answers both questions (also check ghostdog74's code above):

(perldoc -fmap):

Quote:
map BLOCK LIST
map EXPR,LIST
Evaluates the BLOCK or EXPR for each element of LIST (locally setting $_ to each element)
and returns the list value composed of the results of each such evaluation. In scalar con‐
text, returns the total number of elements so generated. Evaluates BLOCK or EXPR in list
context, so each element of LIST may produce zero, one, or more elements in the returned
value.

@chars = map(chr, @nums);

translates a list of numbers to the corresponding characters. And

%hash = map { getkey($_) => $_ } @array;

is just a funny way to write

%hash = ();
foreach $_ (@array) {
$hash{getkey($_)} = $_;
}
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