SA0010: Arrays with only one component

Function	Determines arrays containing only a single component.
Reason	An array with a component can be replaced by a Base Type variable. Access to such a variable is much faster than access to a variable via an index.
Exception	The length of an array is often determined by a constant and used as a parameter for a program. The program can then work with arrays of different lengths and does not have to be changed if the length is only 1. Such a situation should be documented accordingly.
Importance	Low

Samples:

PROGRAM MAIN 
VAR
    aEmpty1  : ARRAY [0..0] OF INT;                 // => SA0010
    aEmpty2  : ARRAY [15..15] OF REAL;              // => SA0010
END_VAR