We have heard the term reuse. But do you know what software reuse is? Software reusability is the probability a piece of source code that may be used again to add new functionalities with little or no modification. Programmers have always reused functions, sections of code and procedures. Code reuse is that the concept that a partial or complete computer program written at just once is being or should be utilized in another program written at a later time. The idea of software reuse emerged as a recognized area after proposed basing of industry on reusable elements. To attain full potential of reuse, we want to focus our attention on development for reuse.
There are many advantages for software reuse. Now let us see some of these advantages.
- Enhances software productivity.
- Reduces software development time.
- Develop software system interoperability.
- Develop software with fewer individuals.
- Move personnel more simply from project to project.
- Reduce software development and maintenance expenses.
- Produce more standardized software.
- Produce higher quality software and supply a robust competitive advantage.
Organizations implementing systematic software reuse programs should be ready to measure their progress and determine the most effective reuse methods. Metrics and models with various reuse readiness levels are used to measure reuse and reusability. Current reuse techniques specialize in the reuse of software artifacts on the basis of desired functionality. Nonfunctional properties of software are crucial. Quality considerations, therefore, should even be the focus for software system reuse.
A good software reuse method facilitates the rise of quality, productivity, performance, reliability, and also the decrease of prices, effort, risk and implementation time. An initial investment is needed to begin a software reuse method, but that investment pays for itself in a very few reuses. In short, the development of a reuse method and repository produces a base of information that improves in quality when every reuse, minimizing the number of development work needed for future projects, and ultimately reducing the chance of latest projects that are based on repository information.
Reusing code saves programming time that reduces costs. If one person or team has already solved a drag, and they share the answer, there is not any need to solve the problem once more.
- Sharing code will facilitate prevent bugs by reducing the quantity of total code that must be written to perform a collection of tasks. Generally, the more code a system contains the more bugs it’s possible to have. Also the shared code may be tested separately from the applications which use it.
- Separating code into common libraries lets programmers concentrate on their specific strengths. A security library, for example, is often designed by security-experts whereas a user interface that uses the library will let UI experts specialize in their tasks.
- Repeatedly, separating code into specialized libraries lets each be tuned for security, performance, and special cases. For example, a Python application may delegate graphics functionality to a C library for performance.
- Delegation of tasks into shared modules permits offloading of some functionality onto separate systems. For example, a system specialized for quick read-only information queries are often used for reporting and accessed by multiple desktop applications.
- Proper and efficient reuse of code will facilitate avoid code bloat. Moreover Bloated code contains unwanted duplication and unused instructions. By sharing code across systems efficiently, each individual element avoids duplicate or unnecessary functionality.