Created
July 30, 2015 12:41
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| scala> new java.util.HashMap[String, Int] | |
| res0: java.util.HashMap[String,Int] = {} | |
| scala> res0.get("hello") | |
| res1: Int = 0 | |
| scala> Option(res0.get("hello")) | |
| res2: Option[Int] = None |
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