The following code throws some light:
perl -e '$qr = "[A-Z]o[A-Z]"; print "[".("WoW" =~ $qr)."][".("wow" =~
# prints 
Any string in perl really can be a regular expression. The binding operator allows you to use just about anything that stringifies as a regular expression. That being said, there really isn't anything magical about the Regexp class except that its objects are able to stringify with the appropriate regexp. That basically means, that unless the object is blessed into the Regexp class, there really is no way to know if the object is intended for Regexp use or not. And even if it is not - that doesn't mean that you couldn't use it as one anyway.
I doubt that there is really anything magic going on under the covers that would act specially upon objects formerly blessed as Regexp.
my @a=qw(random brilliant braindead); print $a[rand(@a)];
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
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:
You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, 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, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.
| & || & |
| < || < |
| > || > |
| [ || [ |
| ] || ] ||