Question

How do design patterns contribute to software reuse?

Answer 1

Patterns support high-level, concept reuse. Using patterns means to reuse the ideas but can adapt the implementation to suit the system that one is developing in order to maintaine and enhance the capacity of the system/software. Patterns are a great idea but one need experience of software design to use them effectively. One have to recognize situations where a pattern can be applied. Inexperienced programmers, even if they have read the pattern books, will always find it hard to decide whether they can reuse a pattern or need to develop a special purpose solution.

Advantages of reuse are lower costs, faster software development and lower risks.

• Design patterns are high-level abstractions that document successful level abstractions ment successful design solutions.

• Program generators are also concerned with software reuse ,the reusable concepts are embedded in a generator system.

• Application frameworks are collections of concrete and abstract objects that are designed for objects reuse through specialisation.