Software reuse refers to the act of updating or implementing software systems from existing software assets.
The systematic design of reusable elements.
These components can be reused as building blocks for the new system.
Different ways to implement software reuse This is becoming increasingly common.
Software components can be reused, ranging from sub-systems to individual objects. Software components that only implement one function or object well-defined are also recycled. Software reuse offers many benefits, including reducing software development costs. Software reuse does not have only one benefit. The following table lists other benefits.
Accelerated technology Development It’s often more important to get a system on the market as quickly as possible than it taking time to develop. By reusing software, both the development and validation process can be shortened.
Effective use of specialist Instead of repeating the work, an application specialist will create software that incorporates their knowledge.
Increased dependability. Software that has been successfully tested under operating systems should be more reliable and reliable than newer software. Its design, implementation and maintenance faults must have been corrected.
Development costs that are lower are proportional to how large the software is being developed. Reusing software is a way to reduce the risk of errors in your code.
While the cost of software already exists, development costs are still a matter for judgment. This is an important aspect of project management, as it decreases the error margin in project cost estimation. This is especially true for subsystems and large software components.
Conformance to standardsSome standards like the user interface standards can also be implemented as an ensemble of reusable elements. Reusable components can be used to implement menus in user interfaces. This ensures that all applications display the same format of menus to users. Because users are more likely to use a standard interface, they make less mistakes.
Additionally, you need to adhere to the original design decisions when you reuse program and design components. This could limit your reuse opportunities. The concept of reuse can be described in an implementation-independent way. An implementation then is created.
These are the main two approaches to concept reusing:
Pattern design.
Programming that generates.
In object-oriented software development, design patterns have many roles. They serve as a standard vocabulary for design and reduce system complexity.
Program generators are used to reuse algorithms and patterns. These patterns and algorithms are embedded in the generator, and can be parameterized using user commands. The generator generates a program automatically. It is possible to reuse a generator-based program when domain abstractions and the mapping of them to executablecode can be identified. These abstractions can be controlled and composed using a domain-specific language.
