perl error messages are easy, just use splain

But the problem with that error message, is it's a LWP error message, probably one you shouldn't ever see

http://search.cpan.org/grep?cpanid=GAAS&release=HTTP-Message-6.03&string=void&i=1&n=1&C=0 

Carp::carp("Useless content call in void context") if $^W;

[download]

which begs the question, why did you(our program) turn on global warnings, did you want to see that error message?

What you should do, is don't turn on global warnings , don't use -W on the shebang line (see perlrun), or don't turn on $^W

If you want warnings in your program use warnings;

More on this in don't turn on warnings for code you did not write

See also How do I post a question effectively?, Corion on how to report-a-bug, not to ask a question, ask question effectively

In reply to Re: Useless content call in void context by Anonymous Monk
in thread Useless content call in void context by qingxia

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


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.