Hmmm... a negative look-ahead looks backwards, isn't it? So I thought it should be the correct one. For example, in the string '12345.6789.0', the first split point should be after the 6, i.e. giving 1245.6 as first element. Hence my idea goes like this: To the *left* of the split point must be a period, followed by a digit. The regexp engine needs to look back, so I thought it is negative look-ahead. Did I misunderstand here the explanations in perlre?

-- 
Ronald Fischer <ynnor@mm.st>

In reply to Re^2: split on zero-length pattern by rovf
in thread split on zero-length pattern by rovf

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.