- grep !/\A\./ for getting rid of "." and ".." in readdir().
- assigning a list to a scalar.
- Regular expressions starting or ending with .*? or .*
+* Update the copy of Modern Perl to the latest edition.
* "So benchmark your code, see how well it performs and then continue
reading this page if it is indeed too slow." - missing comma.
-* Update the copy of Modern Perl to the latest edition.