You are in map()'s EXPR form and so are not seeing the real problem.

Disambiguate your expression: 

my %hash=map { ;       # Disambiguator

[download]
Hmmm, I see that this does work. So basically you're saying that if don't put that disambiguator there, perl thinks it's the EXPR form of map() rather than the BLOCK form, notwithstandig the fact that there's no comma after the block itself. I think this is so because it begins to interpret the "no" as a hash(ref)'s key, right?

All in all one the lesson we learn could be that "while nothing but perl can parse Perl, even perl sometimes has difficulties doing so"...

In reply to Re^2: map()'s BLOCK and deviations from othogonality... by blazar
in thread map()'s BLOCK and deviations from othogonality... by blazar

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.