Hi. Well #1 and #2 are completely equivalent. #1 is the long form.
The second form is just syntactic sugar for #1.
Perl does not do implicit dereferencing. $r being a reference you need the arrow or $$r{3} (which I like better written like ${ $r }{3} if not writing a one-liner). Maybe you can reread 'perldoc perlref' where you'll find quite a few examples. In particular look for "deref".
I usually stick with the arrow everywhere, except where you can't
(e.g slices don't play well the arrow as the context imposed on the RHS is scalar, but hey you can write your own slice function if you find it prettier).
hth, cheers
--stephan
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.
|
