When our student friend turns in his assignment he should be sure to add single quotes around filename on line number 4.

He should also add comments explaining what is going on and add some code to print out the array values. A final result (containing the obfuscatory dereferenced reference) is thus: 


#!/usr/bin/perl -w
use strict;
use IO::File;
use constant FILENAME => 'filename'; #Replace filename with name of in
+put file.

my $file = IO::File->new( "< ". FILENAME ) 
   
    or die "Failed to open '@{[FILENAME ]}', $!"; # Dereferenced array
+ ref and OS error
        
my @elements;
{
    local $/ = $/.$/; #Replace default input delimeter (\n) with (\n\n
+)
    @elements = <$file>;
}
$file->close();

#Now test to see that everything reads out okay
print "Here are the elements of the array:\n";
for (my $i = 0; $i < @elements; $i++) {
    print "Element number $i of the array is:\n$elements[$i]\n";    
}

[download]
If our friend makes some effort to understand what he has submitted then he will have learned his lesson well. Maybe we will see him here with Tye and Merlyn someday.

In reply to Re: Re: Populating an array by sierrathedog04
in thread Populating an array by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.