Not sure if I'm understanding correctly what you're intending to do, but if the idea is to force the argument to write (i.e. { 42 }) to be handled as a coderef (without having to say sub {...}), using Exporter works for me:

( A.pm ) 

package A;

use subs qw(write);  # only needed if you want to call write {...} wit
+hin package A itself
use Exporter 'import';
@EXPORT_OK = qw(write);

sub write (&) { printf "write(): $_[0] -> %s\n", $_[0]->() }

[download]

used as 

package B;

use A 'write';

write { 42 };

[download]

would treat { 42 } as a sub, and print out 

write(): CODE(0x65eb80) -> 42

[download]

In reply to Re: redefining CORE:: names by almut
in thread redefining CORE:: names by dk

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.