NAME

       Analizo::Metric::NumberOfPublicAttributes - Number of Public Attributes (NPA) metric

DESCRIPTION

       The metric calculation is based on the following article and calculates the number of public attributes
       of a class.

       Article: Monitoring of source code metrics in open source projects by Paulo Roberto Miranda Meirelles.

       See the adaptation of the paragraph about Number of Public Attributes in the article:

       It measures the encapsulation. The attributes of a class must only serve to the functionalities of
       itself. Thus, good programming practices recommend that the attributes of a class must be manipulated
       using the access methods (Beck, 1997), the attributes of a class must be private, indicating that the
       ideal number for this metric is zero.