How to Handle Errors from Goroutines in Go?

Returning Errors from Goroutines via Channels

When executing functions in goroutines, it becomes necessary to handle errors efficiently. In Go, functions often return both a value and an error, as exemplified by the createHashedPassword function:

func createHashedPassword(password string) (string, error) {
  // Code
}

To pass both data and errors from a goroutine, it's common to employ channels. However, the question arises: how can we handle errors effectively?

The solution lies in creating a custom data structure, such as a Result struct, to encompass the output and error:

type Result struct {
    Message string
    Error error
}

Once this structure is defined, we can instantiate a channel and utilize it for communication:

ch := make(chan Result)

With this channel in place, goroutines can write Result objects containing messages and errors, ensuring efficient data and error handling between concurrent tasks.

The above is the detailed content of How to Handle Errors from Goroutines in Go?. For more information, please follow other related articles on the PHP Chinese website!