I was recently tasked with 'porting' a large body of code from Perl 5.6 to 5.8.x. The following construct (simplified), which was legal in 5.6 is no longer so:
my %$h = ('name' => 'value', ...);
...
print $h->{'name'};
Was it legal? I can understand my %$h to work as a symref. But then why should $h->{'name'} be correct? Or else does this mean that
my %$h = ('name' => 'value', ...);
# was "expanded" to
my $h = {'name' => 'value', ...};
or something like that? If so, then I agree on such behaviour to have been removed, as you declare variables, not variable dereferences that autovivify the reference. That would be too much of a dwimmery, doing what in fact I shouldn't mean.
-
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.
|