ch03.023_best

来自「Perl Best Practices the source code」· 023_BEST 代码 · 共 33 行

##############################################################################
##   Code fragment (Recommended) from Chapter 3 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 $MIN_ASSESSABLE => 10_000;

my @tax_form_sequence;
my $total_paid;

FORM:
for my $tax_form (@tax_form_sequence) {
    my $notional_tax_paid 
        = $tax_form->{reported_income}  * $tax_form->{effective_tax_rate};
 
    next FORM if $notional_tax_paid  < $MIN_ASSESSABLE;
 
    $total_paid  
        += $notional_tax_paid - $tax_form->{allowed_deductions}; 
}