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August 29, 2015 14:04
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| def sideEffect() { | |
| //increment hadoop counter | |
| } | |
| val list = List(Some("a"),Some("b"),None, Some("e"), None) | |
| val filtered = list.flatMap { x => | |
| if(x.isEmpty) sideEffect() | |
| x | |
| } | |
| filtered | |
| // res36: List[java.lang.String] = List(a, b, e) |
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