Okay, say I have three iterators, $iter1, $iter2, $iter3. I'll demonstrate an example of each by just using them:

while( defined( my $item = $iter1->() ) {
    print "1: $item\n";
}

while( defined( my $item = $iter2->() ) {
    print "2: $item\n";
}
while( defined( my $item = $iter2->() ) {
    print "3: $item\n";
}

#outputs:
1: 1
1: 2
1: 3
2: y
2: n
3: 7
3: 14
3: 21
3: 28

[download]

So, what I want to do is something like:

$nl_iter = NestedLoops( \@Loops ); # some fancy magic for \@Loops

while( my @items = $nl_iter->() ) {
    print join ", " @items;
    print "\n";
}

#outputs:
1, y, 7
1, y, 14
1, y, 21
1, y, 28
1, n, 7
1, n, 14
...
3, n, 21
3, n, 28

[download]

    -Bryan

In reply to Re^2: NestedLoops (Algorithm::Loops) and Iterators by mrborisguy
in thread NestedLoops (Algorithm::Loops) and Iterators by mrborisguy

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.