2020, Vol. 5, Issue 5, Part B

For contrast, a set represents a collection of objects in a package or container. The contents of a set is a bunch. These vague descriptions are made precise as follows. A data structure is a collection, or aggregate, of data. The kinds of structuring we consider are packaging and indexing. These two kinds of structure give us four data structures.

1.unpackaged, unindexed: bunch

2.packaged, unindexed: set

3.unpackaged, indexed: string

4.packaged, indexed: list

Any binary or number is an elementary bunch, or element.