Some definitions of "Design patterns"

· “Design patterns are recurring solutions to design problems you see over"(et. al., 1998).

· “Design patterns constitute a set of rules describing how to accomplish
certain tasks in the realm of software development.” (Pree, 1994)

· “Design patterns focus more on reuse of recurring architectural design
themes, while frameworks focus on detailed design… and
implementation.” (Coplien & Schmidt, 1995).

· “A pattern addresses a recurring design problem that arises in specific
design situations and presents a solution to it” (Buschmann, et. al. 1996)

· “Patterns identify and specify abstractions that are above the level of
single classes and instances, or of components.” (Gamma, et al., 1993)