Hi folks,

Quite a simple one, but it's puzzling me.

I'm trying to match each line of a string, including empty lines. I've found that foreach (/(.*)/gm) does the job - because if it sees two newlines in a row, then dot star matches (0 copies of any-character-but-newline) and it returns an empty string.

And that's fine. But then I thought to myself, hang on, I should be using split here, so I changed it to foreach (split /\n/) ...and it doesn't match empty lines.

I've looked in the Cameliad, but either it doesn't explain or (more likely) I'm not understanding correctly.

Could someone explain?

Cheers,

andy.

In reply to Split and empty strings by andye

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.