What are some effective error handling techniques in Go?

What are some effective error handling techniques in Go?

In Go, effective error handling techniques include using multiple return values, custom error types, and the 'defer' statement.

Can you explain how to use multiple return values for error handling?

Sure! In Go, functions can return multiple values, allowing you to return both a result and an error. For example, result, err := someFunction() lets you check if err is nil before using result.

What are custom error types and how do I create one?

Custom error types in Go are structs that implement the error interface. You can create one by defining a struct and a method that returns a string representation of the error.

How does the 'defer' statement help in error handling?

The 'defer' statement allows you to schedule a function call to be run after the function completes, which is useful for cleanup tasks, like closing files or connections, even if an error occurs.