Krangl question:
```val df = dataFrameOf("strcol")...
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Steven Wang
09/07/2020, 2:56 PMKrangl question:
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val df = dataFrameOf("strcol") ("s1", "s2", "s3")
val l = listOf("s1", "s2")
// Is there any vectorized version to achieve this filter?
df.filterByRow { l.contains(it["strcol"]) }