ABSTRACT Reusing programs and other artifacts has been shown to be an effective strategy for significant reduction of development costs. This article reports on a survey of 128 developers to explore their experiences and perceptions about using other people’s code: to what extent does the “not invented here” attitude exist? The survey was structured around a novel and simple “4A” model, which is introduced in this article: for an organization to obtain any benefits from reusing code, four conditions must obtain: availability, awareness, accessibility, and acceptability. The greatest impediments to reuse were shown to be awareness of reusable code and developers’ perceptions of its acceptability for use on their new projects. For 72% of developers, the complexity of the old code was cited as a reason that the code was not reused. The survey also included developers’ suggestions for ways to take greater advantage of existing code and related artifacts.
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