kotlin-spark-api_3.3.2_2.13/org.jetbrains.kotlinx.spark.api/UserDefinedFunction4/invoke

invoke

operator fun <DsType> invoke(    param0: TypedColumn<DsType, T1>,     param1: TypedColumn<DsType, T2>,     param2: TypedColumn<DsType, T3>,     param3: TypedColumn<DsType, T4>): TypedColumn<DsType, R>

Allows this UDF to be called in typed manner using columns in a Dataset.selectTyped call.

See also

typedCol

to create typed columns.

UserDefinedFunction.apply
operator fun invoke(param0: Column, param1: Column, param2: Column, param3: Column): Column

Returns an expression that invokes the UDF in untyped manner, using the given arguments.

See also

UserDefinedFunction.apply