func (s *Scratch) MapSet(k, mk string, v interface{}) (string, error) {
	s.init()

	s.Lock()
	defer s.Unlock()
	return s.mapSet(k, mk, v, true)
}
func (s *Scratch) MapSet(k, mk string, v interface{}) (string, error) {
	s.init()

	s.Lock()
	defer s.Unlock()
	return s.mapSet(k, mk, v, true)
}
func ( s * Scratch ) MapSet ( k , mk string , v interface { } ) ( string , error ) { s . init ( ) s . Lock ( ) defer s . Unlock ( ) return s . mapSet ( k , mk , v , true ) }
// MapSet stores the value v into a key mk in the map named k.
MapSet stores the value v into a key mk in the map named k .