- $
- $VAR1
- $VAR2
- $|
- -d
- -e
- -p
- -v
- ;
- =cut
- =head1
- =head2
- =pod
- bareword
- buffering
- casting
- chomp
- course
- CPAN
- Data::Dumper
- debug
- debugging
- documentation
- e-book
- Eclipse
- editor
- emacs
- global symbol
- i
- IDE
- is_number
- Komodo
- looks_like_number
- my
- package
- Padre
- Path::Iterator::Rule
- Path::Tiny
- perldoc
- POD
- pod2html
- pod2pdf
- possible typo
- say
- scalar
- Scalar::Util
- strict
- training
- type conversion
- undef
- uninitialized value
- unknown warnings
- video
- vim
- warnings