Wrapper

A wrapper is a program, code segment, or software library that provides an interface around another function, method, or library. The wrapper aims to simplify or extend the use or integration of the encapsulated functionality without altering the underlying logic.

A central aspect of a wrapper is abstraction. The wrapper provides a simplified interface that hides the complexity of the underlying functionality. This makes it easier to use and implement since users or developers do not have to interact directly with the complicated or non-intuitive original code.

Example: In web development, a wrapper is often created around an API (Application Programming Interface) to simplify communication with that API. Instead of manually writing complex HTTP requests, the developer can simply use the methods of the wrapper, which internally handle these requests.

Another important aspect is compatibility. Wrappers are often used to connect older or incompatible systems. By providing a standardized interface, the wrapper enables interaction between different systems or software components that would otherwise not be directly compatible.

Example: In database programming, a wrapper can be used to support various database systems. The wrapper provides a unified interface, allowing the application code to be independent of the database system being used.

In summary, a wrapper is a useful technique in software development that offers abstraction and compatibility. By simplifying usage and enabling the integration of different systems, a wrapper helps increase development efficiency and improve code maintainability.