Thanks for the kudos ;-)
Interpolation stringifies. Sinister consequences come to bite you if you get the habit and do so with references:
use strict;
my $arrayref = [ qw(a b c) ];
my %hash;
$hash{abc} = $arrayref; # ok
print $hash{abc}->[2],"\n"; # prints c
$hash{abc} = "$arrayref"; # oops, reference converted to a string
print $hash{abc}->[2], "\n"; # barfs
__END__
c
Can't use string ("ARRAY(0x9f43c28)") as an ARRAY ref while "strict re
+fs" in use at - line 5.
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: |
| & | | & |
| < | | < |
| > | | > |
| [ | | [ |
| ] | | ] |
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.