This is either "picky" or "iggerant" but the statement (above) that...

"You can also add elements anywhere in the array by just storing something at the new index."

... seems to me to be, at once, true, and "possibly confusing."

In short, I don't know any function that will add an element to an array at any arbitrary index nor any technique (aside from the one below) for doing so.

#!usr/perl/bin
use strict;
use warnings;
use Data::Dumper;

my $file0 = "foo.txt";
my $file1 = "bar.txt";
my $file2 = "blivitz.txt";

my @array1 = ($file0, $file1, $file2);

print "Initial array:\n";
my $elementindex = 0;
for my $file(@array1) {
    print "\$elementindex $elementindex is $file\n";
    $elementindex++;
}
print "\n";

# Now adding an interior element to the array, in this case, arbitrari
+ly inserting "new element" 
# after "foo.txt" and before "bar.txt"
#(to add to beginning or end, see push and unshift)

my @temp_array = @array1;    # copy all elements to new array

@temp_array = ($array1[0], "new element", $array1[1], $array1[2]); 

@array1 = @temp_array;         # copy revisions back to @array1

$elementindex = 0;
for my $file(@array1) {
    print "After revisions, \$elementindex $elementindex is $file\n";
    $elementindex++;
}

print "\n";

# This REPLACES the latest content of $array1[1], "new element", with 
+$addelement.txt
# BUT  note it's NOT "add"(ing) an element "anywhere"

my $addelement = "addelement.txt";

$array1[1] = $addelement;   #

$elementindex = 0;
for my $file(@array1) {
    print "now \$elementindex $elementindex is $file\n";
    $elementindex++;
}
[download]

Output:

$elementindex 0 is foo.txt
$elementindex 1 is bar.txt
$elementindex 2 is blivitz.txt

After revisions, $elementindex 0 is foo.txt
After revisions, $elementindex 1 is new element
After revisions, $elementindex 2 is bar.txt
After revisions, $elementindex 3 is blivitz.txt

now $elementindex 0 is foo.txt
now $elementindex 1 is addelement.txt
now $elementindex 2 is bar.txt
now $elementindex 3 is blivitz.txt
[download]

Perhaps splice() ( perldoc -f splice ) is also an option but thus far /me does not see how to implement it.

---

---

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! —

• How do I compose an effective node title?
• How do I post a question effectively?
• Markup in the Monastery

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:
	&		&
	<		&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.