Not really, you can set a variable's value with arbitrary code, so it's rather consistent of perl to never run it. For example if you had :

my $first = 1; my @second = grep { ($_+1) % 2 } map { $_ ** 3 } 1..12; my %third = some_function();
Perl could easily apply the first assignment during compilation, you would kind of expect the second to be run at run time, and the third assignment might either fail or yield the wrong data depending on whether a definition and redefinition of some_function have been seen at that point.

But perl knowing about the structure of the code (eg. lexicals in a given scope) at compile time is kind of the point.


In reply to Re^4: Use of uninitialised value... but it is defined ?! by Eily
in thread Use of uninitialised value... but it is defined ?! by seki

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.