I don't know if it is trolling? (Yesterday I read some articles about popularity of Perl and tried to remember which things in Perl took away some of my time and mood; And I think that they could be annoying for other beginners.)

Why did I used $hash{length}? It's because I used $array[length] many times. And usually I suppose (cargo-cult?) that similar construct should behave similar. And I have used $hash{1+1} before, and haven't gained "('1+1' => smth)". So I dislike that bareword exception that you mean.
$_="abc";
$h{1+3}=41;
$h{a+3}=42;
$h{- length}=43;
$h[1+3]=41;
$h[a+3]=42;
$h[- length]=43;
$h[length]=44;
$,='|';
print %h,"\n",@h
__END__
-length|43|4|41|3|42|
|||43|44|41

[download]

In reply to Re^2: Opinion: where Perl5 wasn't attractive for me by rsFalse
in thread Opinion: where Perl5 wasn't attractive for me by rsFalse

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.