I have constructed a more elaborate test -
use strict;
use warnings;
use Data::Dumper;

# test 1
print for (1..10 or 'a'..'k');    # line 6
print "\n";

# test 2
my @range = 1..10 or 'a'..'k';    # line 10
print for (@range);
print "\n";

# test 3
my @r1 = 1..10;
my @r2 = 'a'..'k';
@range = @r1 or @r2;              # line 17
print for (@range);
print "\n";

[download]
And when I ran it, I got the following warnings and results -
Useless use of range (or flop) in void context at p92.pl line 10.
Useless use of private array in void context at p92.pl line 17.
Use of uninitialized value in range (or flip) at p92.pl line 6.
abcdefghijk
12345678910
12345678910

[download]
The warnings and results might give a clue to what is happenning with list/range and the for and or operators?

In reply to Re: Re: for loops and 'and' by Roger
in thread for loops and 'and' by Anonymous Monk

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.