Array | Indexable list of scalar values. |
Code | A piece of Perl code, e.g., a subroutine. |
IO | Filehandle. Used in input and output operations. |
Format | A format for producing reports. |
Glob | All data types. |
Hash | Associative array of scalar values. |
Scalar | Strings, numbers, typeglobs, and references. |
Perl variables can have a distinct value for each of these data types simultaneously.