Function Row.opIndex
Simplify retrieval of a column value by index.
To check for null, use Variant's .type property:
	row[index]
Prototype
inout inout(std .variant .VariantN!(32L)) opIndex(
								
  ulong i
								
);
							
						Parameters
| Name | Description | 
|---|---|
| i | the zero based index of the column whose value is required. | 
Returns
A Variant holding the column value.