Function Wrap

functions.go:143–150

Wrap changes the Cause of the error. The location of the Wrap call is also stored in the error stack. For example: if err := SomeFunc(); err != nil { newErr := &packageError{"more context", private_value} return errors.Wrap(err, newErr) }

(other, newDescriptive error)

//   }
//
func Wrap(other, newDescriptive error) error {
	err := &Err{
		previous: other,
		cause:    newDescriptive,
	}
	err.SetLocation(1)
	return err
}

// Wrapf changes the Cause of the error, and adds an annotation. The location
// of the Wrap call is also stored in the error stack.