2.3.3.2. - Data Arrays
The second kind of array is the
data
array introduced in spec release 4.00.
The data arrays store and manipulate their contents
far more efficiently than
associative arrays, and also use a far more intuitive syntax
than the data group facility (described later) for which they are an
alternative.
For
data
arrays, the array index must be a number, and array elements
are numbered consecutively starting at zero.
Data arrays must be explicitly declared using the
array keyword.
The data values of data-array elements are not currently saved in the
user's state file, unlike associative array elements and the contents
of data groups.
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