Implement the error interface by defining a type with an Error() string method to return a custom error message.
Implement the error interface by defining a type with a single Error() string method.
type MyError struct {
message string
}
func (e MyError) Error() string {
return e.message
}
The error interface is satisfied automatically when any type defines this method, allowing it to be returned from functions expecting an error.
In Go, an error is just a value that can describe what went wrong. To make your own custom error, you create a type (like a struct) and give it a method called Error that returns a text message. Think of it like a label on a box; as long as the box has a label that says what's inside, the system knows how to handle it.