p5-Set-NestedGroups

Perl module for grouped data eg ACL's, city/state/country etc

Set::NestedGroups gives an implementation of nested groups, access control lists (ACLs) would be one example of nested groups. For example, if Joe is a Manager, and Managers have access to payroll, you can create an ACL which implements these rules, then ask the ACL if Joe has access to payroll.