Consider that following string: a,b,c,d,e,f
this string has 6 substrings and 5 commas between them. each one of the substrings can contain whatever symbol there is. At the end I would like to split it like this:

 my ($a,$b,$c,$d,$e,$f) = split(/,/ $string);

But first I would like to check that this string is valid meaning there is a substring between the commas.
I can use like this:  if(!defined($a) || !defined($b) || ... || !defined($f)) ...

but it doesn't look very good and it's too long. I would like somehow to check it with split or regex.
I also tried to use if(($string =~ tr/,//) != 5) ... but it isn't a good idea because I won't catch the "a,b,c,d,,f" case or if the one of the substrings will conatine a comma (for example: $b = "hello_world,bye";)

In reply to check if string is valid with special cases by ovedpo15

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.