Beefy Boxes and Bandwidth Generously Provided by pair Networks
Syntactic Confectionery Delight

comment on

( [id://3333] : superdoc . print w/replies, xml ) Need Help??
Just to be clear: is the line it refers to the print within the while in your example code? If one of the fetched columns is NULL, the variable it is assigned to will be undef.

You can group your my declarations, and you can use map to get rid of undefs:

while ( my( $giName, $gssName, $definition, $sequence ) = map {defined + ? $_ : ''} $sth2->fetchrow_array )
Or you can turn off uninitialized warnings within the while loop:
no warnings 'uninitialized';

Caution: Contents may have been coded under pressure.

In reply to Re: Finding error: uninitialized value in concatenation? by Roy Johnson
in thread Finding error: uninitialized value in concatenation? by bwelch

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.