Method set

API/fleece/Mutable.hh:118–118

        void resize(uint32_t size)              {FLMutableArray_Resize(*this, size);}

        Slot set(uint32_t i)                    {return Slot(FLMutableArray_Set(*this, i));}
        void setNull(uint32_t i)                {set(i).setNull();}

        template <class T>