Since the OP mentions that the "Y" will be at the end, why not use a [ -1 ] subscript to avoid the "defined" complication?

That works, but what if you just so happen to have a "Y" in the third field? The OP's example lines only have numbers, granted, but I didn't want to assume too much about how his/her data is structured.

You could also use a single push with the conditional and target arrays in a ternary. Some may find this less readable than the if ... else ... but I prefer it for simple "push to this or that depending" situations.

Ah, yes, that's a good point. I was trying that, actually; it didn't work ("Not an ARRAY reference at ..."), but it didn't occur to me to wrap the whole shebang in a @{ }. OTOH, between that and the need to take references to the arrays you want to push to, it is indeed on the cryptic side.

Nevertheless, I learned something new. Thank you for enlightening me, brother!

In reply to Re^3: Perl : Split/Regex by AppleFritter
in thread Perl : Split/Regex by sravs448

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.