Scala Spark包含vs.不包含 [英] Scala Spark contains vs. does not contain

问题描述

我可以使用包含"过滤RDD中的元组(如下所述).但是，使用不包含"过滤RDD呢?

I can filter - as per below - tuples in an RDD using "contains". But what about filtering an RDD using "does not contain" ?

val rdd2 = rdd1.filter(x => x._1 contains ".")

我找不到此语法.假设有可能并且我没有使用DataFrame.我看不到如何使用正则表达式和/或过滤器示例.

I cannot find the syntax for this. Assuming it is possible and that I'm not using DataFrames. I cannot see from how to do it with regex and/or filter examples.

推荐答案

它只是contains过滤谓词的否定:

val rdd2 = rdd1.filter(x => !(x._1 contains "."))

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