I'm not sure split is the right choice for extracting fixed-length substrings. Isn't that really what substr is for (I mean, if you don't want to use unpack)? 

sub split_len {
    ## split_len( $chars, $string[, $limit] ) 
    ## - splits $string into chunks of $chars chars
    ## - limits number of segments returned to $limit, if provided
    my ($chars, $string) = @_;

    my ($i, @result);  
    for ($i = 0; ($i+$chars) < length($string); $i+=$chars) {
        last if (defined $limit && @result >= $limit);
        push @result, substr($string, $i, $chars);
    }

    # deal with any short remainders
    return @result if (defined $limit && @result >= $limit);
    if ($i > length($string)-$chars) {
        push @result, substr($string, $i);
    }

    return @result;
}

[download]
<-radiant.matrix->
A collection of thoughts and links from the minds of geeks
The Code that can be seen is not the true Code
I haven't found a problem yet that can't be solved by a well-placed trebuchet

In reply to Re: Using split() to divide a string by length by radiantmatrix
in thread Using split() to divide a string by length by japhy

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.