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Top Forums Shell Programming and Scripting Find highest records in table Post 302828531 by Yoda on Tuesday 2nd of July 2013 03:47:35 PM
Old 07-02-2013
if ( $1 in A ) statement scans if field $1 in present in array A index.

To know more about this expression check: Scanning an Array

Basically the code is checking if a 1st field is already part of array index, if yes then we will perform the comparison to determine whether to keep or discard existing record:
Code:
                        if ( A[$1] < V )
                        {
                                A[$1] = V
                                R[$1] = $0 OFS V
                        }

This User Gave Thanks to Yoda For This Post:
 

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Log::Dispatch::Array(3pm)				User Contributed Perl Documentation				 Log::Dispatch::Array(3pm)

NAME
Log::Dispatch::Array - log events to an array (reference) VERSION
version 1.001 SYNOPSIS
use Log::Dispatch; use Log::Dispatch::Array; my $log = Log::Dispatch->new; my $target = []; $log->add(Log::Dispatch::Array->new( name => 'text_table', min_level => 'debug', array => $target, )); $log->warn($_) for @events; # now $target refers to an array of events DESCRIPTION
This provides a Log::Dispatch log output system that appends logged events to an array reference. This is probably only useful for testing the logging of your code. METHODS
"new" my $table_log = Log::Dispatch::Array->new(\%arg); This method constructs a new Log::Dispatch::Array output object. Valid arguments are: array - a reference to an array to append to; defaults to an attr on $table_log array This method returns a reference to the array to which logging is being performed. log_message This is the method which performs the actual logging, as detailed by Log::Dispatch::Output. AUTHOR
Ricardo Signes, "<rjbs@cpan.org>" BUGS
Please report any bugs or feature requests through the web interface at <http://rt.cpan.org>. I will be notified, and then you'll automatically be notified of progress on your bug as I make changes. COPYRIGHT
Copyright 2008 Ricardo SIGNES, all rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.10.1 2008-04-29 Log::Dispatch::Array(3pm)
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