Beefy Boxes and Bandwidth Generously Provided by pair Networks
good chemistry is complicated,
and a little bit messy -LW
 
PerlMonks  

Comment on

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

Yes, that's the problem with simple fixes. I actually thought of something similar to the BEGIN{ $main::a... trick and submitted it months ago for List::MoreUtils::pairwise, where it was eventually pointed out (as I should have realized myself) that it would only work for the first invocant of use Modulename.

On the other hand, import does have caller context. So a fix could be applied within import. But as I mentioned in another post in this thread, that wouldn't solve times where the user skips import with "use List::Util ();, and then fully-qualifies List::Util::reduce in his code.

So, this can be mostly fixed by overriding import. But probably instead should be fixed within the Perl interpreter so as to special-case $a and $b further. They already have special case treatment for strict vars. One step further isn't going to suddenly allow a bunch of "only once" bugs to slip through people's code.


Dave


In reply to Re^4: Eliminating "used only once" warnings from List::Util::reduce by davido
in thread Eliminating "used only once" warnings from List::Util::reduce by davido

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!
  • 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?
    Username:
    Password:

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

    How do I use this? | Other CB clients
    Other Users?
    Others making s'mores by the fire in the courtyard of the Monastery: (4)
    As of 2015-07-03 23:20 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









      Results (57 votes), past polls