Github user aarondav commented on the pull request:
https://github.com/apache/incubator-spark/pull/572#discussion_r9801137
(1 to folds) is preferred, your style is fine though we use 2 space wrapped
indents instead of 4. Would this be possible, though?
```
(1 to folds).map { fold => (
new PartitionwiseSampledRDD(rdd,
new BernoulliSampler[T]((fold - 1) / foldsF, fold / foldsF, complement
= false), seed),
...
)}.toList
```
anyway up to you but that way avoids breaking a line in a nested
expression.
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