If you are not familiar with design patterns,
look here.
In 1964,
Christopher Alexander wrote a book called '
Notes on the Synthesis of Form' for architects and civil engineers to help them cope with incomplete and contradictory requirements during their design process. He suggests they simplify the process by looking at just the abstract elements and build a model that meets the basic requirements. This is followed by his contribution to the 1977 book '
A Pattern Language' where these abstract elements are standardized into a pattern that is applied to the overall design. This second book strongly influenced a paper on some
patterns for smaltalk in 1987 which influenced the seminal work, '
Design Patterns: Elements of Object-Oriented Software' in 1994.
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