Programmer Utilities › Lists › Lists Concepts

Lists Concepts

Using the list facilities, whole sets of objects or members may be processed with a single instruction. Toolkit allows you to store a list of items under a single name, and then to subsequently identify all the items in the list just by referring to the list name. Toolkit allows you to create, manipulate, and use, four types of lists:

• Lists of objects
• Lists of database files
• Lists of database file members
• Lists of formats

Each list is made up of list entries containing information about the elements within the list relevant to the list type; for instance:

• For objects - owner, object attribute
• For members - source type, last change date
• For database files - journalling status, database relations
• For formats - file, format identifier

Database file lists can be regarded as a special type of object list.

Note: Toolkit also has facilities for referring to a list of libraries by a single name.