I can see points on both sides here. I like a middle ground of a warning for assigning a scalar to a list of more than one element. So no behavior would be changed but under "-w", the following would solicit a warning: 

    ( $x, $y )= $z;
    @array[1,2]= $z;
    @hash{qw(a,b)}= $z;
    @hash{@array}= $z x @array; # unless 1==@array

[download]
but the following would not: 
    ( $x )= $z;
    ( $x, $y )= ( $z );
    @array= $z;  # sorry, I think this has to remain unwarned
    @array[1]= $z;  # but already has its own warning
    @array[1,2]= ( $z );
    @hash{qw(a,b)}= ( $z );
    @hash{@array}= ( $z ) x @array;

[download]
Note how this would catch the mistake a senior monk made in this very thread.

        - tye (but my friends call me "Tye")

In reply to (tye)Re: Possible pitfall with Slices by tye
in thread Possible pitfall with Slices by fundflow

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.