SMART datagrid v.1 > Classes > CalculatedColumn

DataLudi.CalculatedColumn.cached  property

If it is true, it will reuse after storing the value returned from valueExpression or valueCallback. 

If need to recalculate, the grid will recalculate and store it. If it is false, it will recalculate whenever the value is requested. 

Defaults to false.

Getter

function cached(): Boolean

Setter

function setCached(value: Boolean)

Note

• Since the time or number of calculation is dependent on internal implementation mode, you should not write the code of relying on these two attributes.

    grid.setColumns([{
        name: "colAmount",
        type: "calced",
        valueExpression: "unit_price * quantity",
        cahced: true
    },
        ...
    ]);

See Also

valueExpression

valueCallback

calcBounds

calcRange

Examples

Calculated Column

Total Calculated Columns