Software design reuse can be an especially effective form of reuse when an organization builds many variations of a particular kind of system.In those cases,the reusable design describes the characteristics of a software family and encodes the expertise responsible for the organization's success in building software in that application domain.Reusable designs can be used in conjunction with an application generator shell to facilitate the construction of domain-specific application generators,which have been shown to dramatically reduce the effort required to construct high-quality application software.This article presents the principles of reusable designs and describes the technology necessary for constructing a supporting application generator shell.
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