aref -- returns an array expression at a given index.
Arguments
- array
An array.
- index
A number giving the index into the array, starting at zero.
Returns
The array element at the given index in the array.
Description
The index starts at zero, and extends to the
length of the array minus one. If the index is
not valid in the array, nil is returned, but
no error is generated.
 | Note: This function is identical to the square bracket syntax for
referencing array elements, with the syntax: array[index] |
Example
Gamma> x = array (1, 5, #d, "farm");
[1 5 d "farm"]
Gamma> aref (x, 0);
1
Gamma> aref (x, 8);
nil
Gamma> x[3];
"farm"
Gamma>