ch02.016_best

Perl Best Practices the source code

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


my $displacement 
    = $initial_velocity * $time  +  0.5 * $acceleration * $time**2;
 
my $price 
    = $coupon_paid * $exp_rate  +  ($face_val + $coupon_paid) * $exp_rate**2;