In the first example you're 'passing a reference to the corresponding typeglob. and this is the best way to pass filehandles to or from subroutines, since it has the optical effect of removing the ambiguity of the typeglob'

As for the prototyping question: 'a backslash quoted character signifies that the argument absolutely must start with that character - for example, \@ would require that the function call specify a list as the first argument'.. but then you are specifying a typeglob which is in fact everything.. so you're requiring 'everything' to be the first argument, which is pointless...

the quoted lines are from a book... and I hope it helps a bit.

Update: fixed some typos

He who asks will be a fool for five minutes, but he who doesn't ask will remain a fool for life.

Chady | http://chady.net/

In reply to Re: Passing filehandles to subs. by Chady
in thread Passing filehandles to subs. by r.joseph

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.