Here is an example of why using @arr[0] is just asking from trouble... 
#!/usr/bin/perl -wT
use strict;

my @arr;

@arr[0] = localtime();
$arr[1] = localtime();

print "\$arr[0] = $arr[0]\n";
print "\$arr[1] = $arr[1]\n";

[download]
Any guesses about the output of this simple script? Select area below to find out. 

=OUTPUT
Scalar value @arr[0] better written as $arr[0] at ./arrayslice.pl line
+ 6.
$arr[0] = 58
$arr[1] = Tue Oct 23 14:30:58 2001

[download]
5 points for anyone who expected $arr[0] to contain an integer. 20 points for anyone who knew it would contain the seconds value, *not* the number of elements in the list returned by localtime().

(10 points for anyone who coded up an example because they weren't sure... woohoo)

-Blake

In reply to Re: Re (2): Array for system() call by blakem
in thread Array for system() call by proxima

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.