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Design by contract (DbC), also known as contract programming, programming by contract and design-by-contract programming, is an approach for designing software. It prescribes that software designers should define formal , precise and verifiable interface specifications for software components , which extend the ordinary definition of abstract ...
The concept of Design by Contract, highly influential as a design and programming methodology concept and a language mechanism present in such languages as the Java Modeling Language, Spec#, the UML's Object Constraint Language and Microsoft's Code Contracts. The design of the Eiffel language, applicable to programming as well as design and ...
The design of the language is closely connected with the Eiffel programming method. Both are based on a set of principles, including design by contract, command–query separation, the uniform-access principle, the single-choice principle, the open–closed principle, and option–operand separation.
Object-Oriented Software Construction, also called OOSC, is a book by Bertrand Meyer, widely considered a foundational text of object-oriented programming. [citation needed] The first edition was published in 1988; the second edition, extensively revised and expanded (more than 1300 pages), in 1997.
Command-query separation is particularly well suited to a design by contract (DbC) methodology, in which the design of a program is expressed as assertions embedded in the source code, describing the state of the program at certain critical times. In DbC, assertions are considered design annotations—not program logic—and as such, their ...
Design–build (or design/build, and abbreviated D–B or D/B accordingly), also known as alternative delivery, [1] is a project delivery system used in the construction industry. It is a method to deliver a project in which the design and construction services are contracted by a single entity known as the design–builder or design–build ...
Design–bid–build (or design/bid/build, and abbreviated D–B–B or D/B/B accordingly), also known as Design–tender (or "design/tender"), traditional method, or hardbid, is a project delivery method in which the agency or owner contracts with separate entities for the design and construction of a project.
This design process by consensus is in contrast to autocratic design, or design by dictator, where the project leader decides on the design. The difference is that in an autocratic style, members of the organizations are not included and the final outcome is the responsibility of the leader. The phrase, "a camel is a horse designed by committee ...