Beefy Boxes and Bandwidth Generously Provided by pair Networks
Your skill will accomplish
what the force of many cannot

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
Brother chromatic, I am not having much success reproducing this. If I create this simple script it works. However, if I try it in an application I am working on it doesn't. After a few hours of frustration I have decided to punt. Help please? Here is a chunk of my code. I am pulling the string out of the database instead of arbitrarily setting it:
my $WhereVal = $Return->[0]->{WhereVal}; my $Temp2 = 2; warn $WhereVal; eval "\$Temp = qq/$WhereVal/"; warn $Temp;
The result is that the eval fails. The log shows:
c.AppModule=m.AppModule and m.Application=$Temp2 at (eval 43) line 19. Use of uninitialized value in concatenation (.) at (eval 43) line 20. Use of uninitialized value in warn at (eval 43) line 21.
The complete subroutine, less gratuitous debugging code:
sub VWP_RunQuery { my ($QueryRef, @Params) = @_; if ($QueryRef) { VWP_Log(5, "Running query $QueryRef..."); my $stt = "select q.FromVal, q.OrderVal, q.SelectVal, q.WhereVal " + . "from VWPQuery q, VWPQueryRef qr where q.Query=qr.Query and " . "qr.DBType = ? and qr.Query = ?"; my $Return = VWP_SQL($stt, ($Session::DBType, $QueryRef)); if (@$Return) { my $OrderVal = $Return->[0]->{OrderVal}; $stt = "select " . $Return->[0]->{SelectVal} . " from " . $Return->[0]->{FromVal}; if ($Return->[0]->{WhereVal}) { my $WhereVal; eval "\$WhereVal = qq/$Return->[0]->{WhereVal}/"; $stt = $stt . " where " . $WhereVal; } if ($OrderVal) { if (($OrderVal =~ /order by/) || ($OrderVal =~ /ORDER BY/)) { $stt = $stt . " " . $OrderVal; } else { $stt = $stt . " order by " . $OrderVal; } } return VWP_SQL($stt, @Params); } } VWP_StrMessage(1, 13, $QueryRef); }

In reply to Re: Double Interpolation of a String by nontrivial
in thread Double Interpolation of a String by chromatic

Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":

  • 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.
Log In?

What's my password?
Create A New User
Domain Nodelet?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others wandering the Monastery: (2)
As of 2023-03-24 23:10 GMT
Find Nodes?
    Voting Booth?
    Which type of climate do you prefer to live in?

    Results (62 votes). Check out past polls.