I'm trying to take in an argument like var1/var2/var3 and transform it to a symbolic variable I can use $ret->{var1}->{var2}->{var3} to access some data.
foreach $argnum (0..$#ARGV){
print "$ARGV[$argnum]\n";
my $xpath=$ARGV[$argnum];
$xpath =~ s/\//}->{/g;
eval ($xpath = "{" . $xpath . "}");
#xpath variable should becode like: $ret->{link}->{rel}
print ${$ret->$xpath};
}
However, I keep getting "Can't call method {} on unblessed reference"
I've also read that symbolic references are bad, so is there a better way to accomplish what I'm trying to do?
-
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.
|