Perl Language Variables
Syntax
- my # Lexical declaration
- our # Global declaration
- $foo # Scalar
- @foo # Array
- $#foo # Array Last-Index
- %foo # Hash
- ${$foo} # Scalar De-Reference
- @{$foo} # Array De-Reference
- $#{$foo} # Array-DeRef Last-Index
- %{$foo} # Hash De-Reference
- $foo[$index] # Array get indexed
- ${$foo}[$index] # Array De-Reference and get indexed.
- $foo->[$index] # Array De-Reference and get indexed ( Simplified )
- $foo{$key} # Hash get value for key
- ${$foo}{$key} # Hash Dereference and get value for key
- $foo->{$key} # Hash Dereference and get value for key ( Simplified )
- \$x # Reference to Scalar
- \@x # Reference to Array
- \%x # Reference to Hash
- =[ ] # Reference to Anonymous Array (Inline)
- ={ } # Reference to Anonymous Hash (Inline)
