if behaves similar to for in this respect.

Yes good point. I always forget about that, too... sometimes you'd like to have the loop counter defined after the loop is over, but you have to make a special effort to do that. This won't work, for example: 

my @list = qw( wuhn tew thuree foah DONE whateva you know);
for my $i (0..10) {
  last if ($list[$i] eq 'DONE');
}
print "final index: $i\n";

[download]

Somewhat surprisingly then, this does not work: 
print $t if (my $t = shift);

[download]

Well, I wouldn't say that that's exactly a surprise -- after all, it's a fairly odd thing to do, declaring it's a lexical after you use it... This doesn't work either: 

$t = shift;
print $t;
my $t;

[download]

In reply to Re^3: Duh. 'my' scope in if else blocks. by doom
in thread Duh. 'my' scope in if else blocks. by gam3

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.