Okay, your usage of the range operator in a scalar context isn't quite correct.

I think what you're looking for is this: 

foreach $i ( 0 .. 19 ) {
  if ($i == 5 .. $i == 10) {
    print "$i\n";
  }
}

[download]
You need to put the full comparison on each side of the range operator. Otherwise, you're doing something that's the equivalent of if ($string eq 'foo' || 'bar' || 'baz') {.

There's one extra bit of info from perlop:

If either operand of scalar ".." is a constant expression, that operand is implicitly compared to the $. variable, the current line number.
So your snippets are doing implicit comparisons against $.:

$i == (5 .. 10) compares $i to the result of the flip-flop, which flips when $. equals 5 and flops when $. equals 10.
$i == 5 .. 10 flips when $i equals 5 and flops when $. equals 10.
$i = (5 .. 10) assigns to $i the result of the flip-flop, which flips $. equals 5 and flops when $. equals 10.</code>

In reply to Re: Re: Re: Range Operators Question by chipmunk
in thread Range Operators Question by dsb

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.