How do you create a custom error message in Go?

  • Using the error package
  • By directly assigning a string to a variable
  • By using the fmt.Errorf() function
  • Go does not support custom error messages directly
You create a custom error message in Go by using the fmt.Errorf() function. This function allows you to format an error message with placeholders and values, similar to fmt.Printf(). The formatted error message is then returned as an error value. This is a common way to provide meaningful error messages when handling errors in Go programs, as it allows you to include dynamic information in the error message.
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