It helps if you show what you've already tried, and how it behaves. Also tell us what your criteria are, so we can judge which solutions work for you.

Given that I'm lazy today, I'll give a short answer anyway (untested):

my @nums = $dotted_num_string =~ /^(\d+)(?:\.(\d+))*$/;

...which captures the numeric parts in @nums.

If you have some known restriction on how many or how few numeric fields there are, you can use a quantifier:

my @nums = $dotted_num_string =~ /^(\d+)(\.\d+){3,5}$/;

gives 4 to 6 numeric fields.

-QM
--
Quantum Mechanics: The dreams stuff is made of


In reply to Re: Regex for matching dotted numbers by QM
in thread Regex for matching dotted numbers by techman2006

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.