Krueger's Survey of Software Reuse [
Krueger, Charles W., ``Software Reuse'',
ACM Computing Surveys, vol. 24, no. 2 (June 1992), pp. 131-184.]
Krueger emphasizes cognitive distance: the difference between the
problem and the expression of the problem in the programming formalism.
Cognitive distance is a rough estimate of the intellectual effort
required to use an approach.
Emphasis on cognitive distance recognizes an important fact:
Programming is an activity performed by humans.
Cognitive distance is reduced in two ways:
- Abstractions in the reuse technique make it easier to go from
a concept of the system to representation in the reuse technique.
- Automation reduces the effort to get from the abstract
representation to executable code.
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