What is the purpose of closures in Golang?

The purpose of closures in Golang is to capture and store variables from within its enclosing function, allowing them to be accessed and used outside of the function. Closures enable functions to access variables beyond their own scope, allowing them to manipulate and modify them without needing to pass them as parameters.

Closures in Golang are commonly used to implement function factories, delayed execution, state management, and other functionalities. By using closures, variables and data can be encapsulated, avoiding dependency on global variables, and enhancing code maintainability and reusability. Additionally, closures can also be used to implement specific business logic, such as achieving auto-increment functionality in a counter.