软件包: libtree-simple-perl (1.33-1)

implementation of a simple tree object

Tree::Simple is a fully object-oriented implementation of a simple n-ary tree. It is built upon the concept of parent-child relationships, so therefore every Tree::Simple object has both a parent and a set of children (who themselves may have children, and so on). Every Tree::Simple object also has siblings, as they are just the children of their immediate parent.

It can be used to model hierarchal information such as a file-system, the organizational structure of a company, an object inheritance hierarchy, versioned files from a version control system or even an abstract syntax tree for use in a parser. It makes no assumptions as to your intended usage, but instead simply provides the structure and means of accessing and traversing said structure.

This module uses exceptions and a minimal Design By Contract style. All method arguments are required unless specified in the documentation, if a required argument is not defined an exception will usually be thrown. Many arguments are also required to be of a specific type, for instance the $parent argument to the constructor must be a Tree::Simple object or an object derived from Tree::Simple, otherwise an exception is thrown.