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About Arrays
Traditionally, an array is a tabular structure used to hold data, much like a spreadsheet
table with clearly defined limits and dimensions. A 2-dimensional (2D) array is like a
simple table. In ColdFusion, you typically use arrays to temporarily store data. For
example, if your site allows users to order goods online, their shopping cart contents
can be stored in an array. This allows you to make changes easily without committing
the information, which the user may change before completing the transaction, to a
database.
Conventional fixed-size 2D array
A 3-dimensional array is like a cube made up of individual cells.
ColdFusion arrays differ somewhat from traditional arrays because they are dynamic.
For example, in a conventional array, array size is constant and symmetrical, whereas
in a ColdFusion 2D array you can have 'columns' of differing lengths based on the data
that has been added or removed.
Developing Web Applications with ColdFusion
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