What is a namespace in object-oriented programming?

A namespace in object-oriented programming serves as a container that holds a set of identifiers such as class names, function names, and variable names. The primary purpose of a namespace is to ensure uniqueness among these identifiers, which helps to prevent naming conflicts, especially in large codebases or when integrating multiple libraries. By encapsulating names within a namespace, it allows developers to organize and separate different parts of the program without worrying about clashes between identifiers.

For example, two different libraries can have classes with the same name, but if they are placed in different namespaces, they can be used in the same program without confusion. This organizational structure is particularly beneficial in complex applications, where modularity and clear identification of components are essential for maintainability and readability.