func (l L) Errorf(s string, args ...interface{}) Err {
	return Err{
		Msg: fmt.Sprintf(s, args...),
		Loc: l,
	}
}
// Errorf constructs a location Err setting the Msg to the results of
// formatting the arguments and the Loc to the location
Errorf constructs a location Err setting the Msg to the results of
formatting the arguments and the Loc to the location
// Errorf constructs a location Err setting the Msg to the results of // formatting the arguments and the Loc to the location
func (l L) Errorf(s string, args ...interface{}) Err {
	return Err{
		Msg: fmt.Sprintf(s, args...),
		Loc: l,
	}
}
func ( l L ) Errorf ( s string , args ... interface { } ) Err { return Err { Msg : fmt . Sprintf ( s , args ... ) , Loc : l , } }
Errorf constructs a location Err setting the Msg to the results of
formatting the arguments and the Loc to the location
Errorf constructs a location Err setting the Msg to the results of formatting the arguments and the Loc to the location