Type Alias: ColumnMapper¶
ColumnMapper = (
row,i) =>Cell
Mapper function for withColumn.
Receives a row as Map<string, Cell> and its 0-based index.
Must return a Cell value for the new or updated column.
Parameters¶
row¶
Map\<string, Cell>
i¶
number
Returns¶
Example¶
TypeScript
const double: ColumnMapper = (row) => (row.get("age") as number) * 2;
df.withColumn("doubled", double);