But the function time() from Time::HiRes will not be imported. To make this binding between &main::time and &Time::HiRes::time we have to this at compile time:
BEGIN { eval { require Time::HiRes; import Time::HiRes qw(time) }; if($@) { warn "Unable to import Time::HiRes\n" }; }
Without the BEGIN, the binding of time to the correct function would not happen:
eval { require Time::HiRes; import Time::HiRes qw(time) }; print time()
Would produce f.exs: 976556706. While
BEGIN { eval { require Time::HiRes; import Time::HiRes qw(time) }; } print time()
Would produce the correct time using the Time::HiRes::time function: 976556789.394509.

Autark.


In reply to Re: (Ovid - try eval)Re: Only by autark
in thread Only by rrwo

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.