ABSTRACT
Pro gram ming in any lan guage can be made eas ier by us ing pre-de vel oped and pre-tested code frag ments or sub rou tines to per form com mon or fre quent op er a - tions. The col lec tion of these frag ments, sam ple pro grams, and sub rou tines con sti - tute a pro gram mer's eq uity. The better or ga nized, coded, and tested this per sonal li brary is the eas ier it will be to de velop a new ap pli ca tion. In pro gram ming, re us - abil ity fos ters pro duc tiv ity, as is the case in so many other fields. Pro gram mers who fail to dis cover this sim ple truth do not last very long in the pro fes sion.
