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Enrich trembitaql #33

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vitaliihonta opened this issue Feb 7, 2019 · 0 comments

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vitaliihonta commented Feb 7, 2019

Add the following methods (like in sparksql):

withColumn:

case class Foo(i: Int, x: Long, s: String)
case class Bar(ij: Long, ss: String)
val pipeline: DataPipelineT[F, Bar, E] = ???
pipeline.withColumn[Foo](_ / 2)

select:

case class Foo(i: Int, x: Long, s: String)
case class Bar(ij: Long, ss: String)
val pipeline: DataPipelineT[F, Foo, E] = ???
pipeline.select[Bar](a => a.i + a.j, _.s * 2)

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