Beefy Boxes and Bandwidth Generously Provided by pair Networks
Pathologically Eclectic Rubbish Lister

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??

G'day szabgab,

I see you've got explanations for why this is happening. In terms of a workaround, I would probably add $a || $b || 1; after the use List::Util ... line. This would help to indicate why that code was there through association and would also remove the clutter of no warnings ... or our ... from the calls to reduce(). Furthermore, changes to code would not require any additional workaround changes. Here's some examples:

$ perl -Mstrict -Mwarnings -E ' use List::Util qw/reduce/; say reduce { $a * $b } 1..6; ' Name "main::a" used only once: possible typo at -e line 3. Name "main::b" used only once: possible typo at -e line 3. 720
$ perl -Mstrict -Mwarnings -E ' use List::Util qw/reduce/; $a || $b || 1; say reduce { $a * $b } 1..6; ' 720
$ perl -Mstrict -Mwarnings -E ' use List::Util qw/reduce sum/; $a || $b || 1; say reduce { $a * $b } 1..6; say sum 1..6; ' 720 21

-- Ken

In reply to Re: Name "main::a" used only once: possible typo by kcott
in thread Name "main::a" used only once: possible typo by szabgab

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, 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, 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.
  • Log In?

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

    How do I use this? | Other CB clients
    Other Users?
    Others perusing the Monastery: (7)
    As of 2015-11-29 11:50 GMT
    Find Nodes?
      Voting Booth?

      What would be the most significant thing to happen if a rope (or wire) tied the Earth and the Moon together?

      Results (750 votes), past polls