Method Is

pkg/errors/std.go:37–49

Is makes the Error implement error comparison.

(target error)

// Is makes the Error implement error comparison.
func (e *Error) Is(target error) bool {
	if e == nil {
		return target == nil
	}
	if namedErr := (interface {
		Namespace() string
		Name() string
	})(nil); errors.As(target, &namedErr) {
		return namedErr.Namespace() == e.Namespace() &&
			namedErr.Name() == e.Name()
	}
	return false
}

// Unwrap makes the Definition implement error unwrapping.
func (*Definition) Unwrap() error {