Not an answer, just a comment. Do I get it right:
- "setter" (in quotes, because I understand it's not really a setter) accepts a compiled regex, one you build with the qr operator;
- "getter" returns not this compiled regex, but, somehow, Perl source code fragment, literal string 'qr/.*uba$/i'. Which you then are trying to parse. Or, where does this 'qr/.*uba$/i' come from, and why is it necessary to manually parse Perl expression?
It doesn't make much sense to me, but I haven't worked with MongoDB, hence not an answer, but a promised comment. The reason you get an undef in OP, is because $re are 2 separate lexical variables, 1 per each own small block. They are declared with my and destroyed at closing curly bracket. What's assigned to $_[0], in next line, is presumably global, completely different $re, and undefined at that time. You don't use strict;, do you? I think this change
my $re;
if($2 eq 'i'){
$re = qr/$_[0]/i;
}else{
$re = qr/$_[0]/;
}
$_[0] =$re;
would give you the result you were hoping for.
Edit: Fixed numeric comparison operator to string comparison eq (thanks, poj).
-
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.
|