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just found a bug...
Sep. 21st, 2017 03:01 pmIn spark.core, RNG, specifically, normal distribution RNG.
It caches values (randomly). Now try to reseed.
It caches values (randomly). Now try to reseed.
funny error in Scala code
Feb. 18th, 2015 09:57 am
val text = "\n\n\nHEADER\n\ncontent\n\n"
val cleanedup = text.dropWhile("\n"==)
The bug comes from the universality of jvm equality, I'd say.
(from scala-user)
Can someone tell me whether this "gotcha" is type-unsafe or am I just not realizing something? This bit me in production code today (via java interop).
Year 2020:
Can someone tell me whether this "gotcha" is type-unsafe or am I just not realizing something? This bit me in production code today (via java interop).
scala> def x: java.math.BigDecimal = null x: java.math.BigDecimal scala> def y = Option[BigDecimal](x) orElse Option[BigDecimal](x) y: Option[BigDecimal] scala> for (z <- y) println(z) java.lang.NullPointerException
Year 2020:
... java.lang.IllegalArgumentException: null value for BigDecimal at scala.math.BigDecimal.(BigDecimal.scala:406) at scala.math.BigDecimal$.apply(BigDecimal.scala:335) at scala.math.BigDecimal$.apply(BigDecimal.scala:332) at scala.math.BigDecimal$.javaBigDecimal2bigDecimal(BigDecimal.scala:347) at .y( :12) ... 28 elided
