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Open Access research with a European policy impact...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by Strathclyde researchers, including by researchers from the European Policies Research Centre (EPRC).

EPRC is a leading institute in Europe for comparative research on public policy, with a particular focus on regional development policies. Spanning 30 European countries, EPRC research programmes have a strong emphasis on applied research and knowledge exchange, including the provision of policy advice to EU institutions and national and sub-national government authorities throughout Europe.

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The effect of inheritance on the maintainability of object-oriented software: an empirical study

Daly, J. and Brooks, A. and Miller, J. and Roper, M. and Wood, M. (1995) The effect of inheritance on the maintainability of object-oriented software: an empirical study. In: Proceedings of the IEEE International Conference on Software Maintenance. IEEE, pp. 20-29.

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Abstract

The empirical study was undertaken as part of a programme of research to explore unsupported claims about the object-oriented paradigm: a series of experiments tested the effect of inheritance on the maintainability of object-oriented software. Subjects were asked to modify object-oriented software with a hierarchy of 3 levels of inheritance depth and equivalent object-based software with no inheritance. The collected timing data showed that subjects maintaining object-oriented software using inheritance performed the modification tasks, on average, approximately 20% quicker than those maintaining equivalent object-based software with no inheritance. An initial inductive analysis revealed that 2 out of 3 subjects performed faster when maintaining the object-oriented software with inheritance. The findings are sufficiently important that attempts to verify the results should be made by independent researchers. Subsequent studies should seek to scale up the findings to the maintenance of more complex software by professional programmers.