Others have adequately explained why
$hash{$key} won't work (since this accesses
%hash, not a reference in
$hash). The reason why
$array[$index]{$key} works when
$array[$index] is a
reference is because Perl makes it work for you. Perl tries to make accessing complex data structures easy for you, and since
$array[$index] can't be anything
but a reference to a hash, there's no harm or ambiguity in treating
$array[$index}{$key} like
$array[$index]->{$key}. You can reference any level of data this way.
Please read perlref, perlreftut, perldsc and perllol for information about references and complex data structures with them.
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.