ch02.040_best

来自「Perl Best Practices the source code」· 040_BEST 代码 · 共 32 行

##############################################################################
##   Code fragment (Recommended) from Chapter 2 of "Perl Best Practices"    ##
##     Copyright (c) O'Reilly & Associates, 2005. All Rights Reserved.      ##
##  See: http://www.oreilly.com/pub/a/oreilly/ask_tim/2001/codepolicy.html  ##
##############################################################################


# Standard modules...
use strict;
use warnings;
use IO::Prompt;
use Carp;
use English qw( -no_match_vars );
use Data::Alias;
use Readonly;

Readonly my $EMPTY_STR       => q{};
Readonly my $FIELD_SEPARATOR => qq{\t};

my $inventory_file;
my $count;

RECORD:
while (my $record = <$inventory_file>) {
    chomp $record; 
    next RECORD if $record eq $EMPTY_STR;
    my @fields = split $FIELD_SEPARATOR, $record; 
    update_sales(\@fields);
    $count++;
}