ch10.005_prob

来自「Perl Best Practices the source code」· 005_PROB 代码 · 共 36 行

##############################################################################
## Code fragment (NOT RECOMMENDED) from Chapter 10 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...
no strict;
use warnings;
use IO::Prompt;
use Carp;
use English qw( -no_match_vars );
use Data::Alias;
use Readonly;

my $filename = $PROGRAM_NAME;
sub process_reading {
    print "processing: ", @_;
}

# Somewhere earlier in the same package (but perhaps in a different file)...
use POSIX;
 
# and later...
 
# Open filehandle to the external device...
open EXDEV(), '<', $filename
    or croak "Can't open '$filename': $OS_ERROR";

# And process data stream...
while (my $next_reading = <18>) {
    process_reading($next_reading);
}