What are the best practices for handling errors in Go?

What are the best practices for handling errors in Go?

In Go, it's essential to check errors immediately after a function call that returns an error. This helps in identifying issues early.

Can you give me an example of error handling in Go?

Sure! Here's a simple example:

result, err := someFunction()
if err != nil {
    log.Fatalf("Error occurred: %v", err)
}
// Continue with result

What about custom error types?

Creating custom error types can provide more context. You can define a struct that implements the error interface.

How do I wrap errors in Go?

You can use the fmt.Errorf function with the %w verb to wrap errors, which allows you to preserve the original error.