Github user jkbradley commented on a diff in the pull request:
https://github.com/apache/spark/pull/5510#discussion_r28369309
--- Diff:
mllib/src/main/scala/org/apache/spark/ml/tuning/ParamGridBuilder.scala ---
@@ -100,13 +100,16 @@ class ParamGridBuilder {
* Builds and returns all combinations of parameters specified by the
param grid.
*/
def build(): Array[ParamMap] = {
- var paramMaps = Array(new ParamMap)
- paramGrid.foreach { case (param, values) =>
- val newParamMaps = values.flatMap { v =>
- paramMaps.map(_.copy.put(param.asInstanceOf[Param[Any]], v))
+ if (paramGrid.isEmpty) Array.empty[ParamMap]
--- End diff --
style: Can you please put braces around this part as well to match the
braces around the "else" part? (That comment from @srowen was hidden by the
update)
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