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Questions and Answers
What does Christopher Alexander's quote about patterns imply?
What does Christopher Alexander's quote about patterns imply?
- Patterns are specific to buildings and towns only.
- Patterns have limited application and cannot be reused.
- Patterns are irrelevant in the context of object-oriented design.
- Patterns describe recurring problems and provide reusable solutions. (correct)
What is the significance of naming a pattern according to the text?
What is the significance of naming a pattern according to the text?
- Limits the applicability of the pattern.
- Adds unnecessary complexity to the design process.
- Reduces the clarity of the design problem and its solution.
- Increases design vocabulary and allows higher-level abstraction. (correct)
What are the essential elements of a pattern as per the text?
What are the essential elements of a pattern as per the text?
- Pattern name, design problem, solution, and consequences. (correct)
- Pattern color, size, shape, and texture.
- Pattern repetition, symmetry, and aesthetics.
- Pattern material, construction, location, and cost.
What is the core of both building patterns and object-oriented design patterns?
What is the core of both building patterns and object-oriented design patterns?
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What is the focus of expressing solutions in terms of object-oriented design patterns?
What is the focus of expressing solutions in terms of object-oriented design patterns?
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Study Notes
Patterns and Design
- Christopher Alexander's quote implies that a pattern is a solution to a problem in a context, emphasizing the importance of understanding the problem and its context before applying a solution.
Significance of Naming a Pattern
- Naming a pattern gives it an identity, allowing it to be communicated and referenced easily, and enabling the creation of a shared vocabulary among designers and developers.
Elements of a Pattern
- A pattern consists of four essential elements: a problem, a context, a solution, and the forces that shape the solution.
Building Patterns and Object-Oriented Design Patterns
- The core of both building patterns and object-oriented design patterns is the idea of capturing a solution to a problem in a context.
Focus of Object-Oriented Design Patterns
- The focus of expressing solutions in terms of object-oriented design patterns is on defining a set of elements that can be combined to solve a problem, rather than on the implementation details of a specific solution.
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