Great, That works perfect !! Also tnx for the links - very helpful On Tue, Dec 1, 2015 at 12:13 AM, Jakob Odersky <joder...@gmail.com> wrote:
> Hi Eyal, > > what you're seeing is not a Spark issue, it is related to boxed types. > > I assume 'b' in your code is some kind of java buffer, where b.getDouble() > returns an instance of java.lang.Double and not a scala.Double. Hence > muCouch is an Array[java.lang.Double], an array containing boxed doubles. > > To fix your problem, change 'yield b.getDouble(i)' to 'yield > b.getDouble(i).doubleValue' > > You might want to have a look at these too: > - > http://stackoverflow.com/questions/23821576/efficient-conversion-of-java-util-listjava-lang-double-to-scala-listdouble > - https://docs.oracle.com/javase/7/docs/api/java/lang/Double.html > - http://www.scala-lang.org/api/current/index.html#scala.Double > > On 30 November 2015 at 10:13, Eyal Sharon <e...@scene53.com> wrote: > >> Hi , >> >> I have problem with inferring what are the types bug here >> >> I have this code fragment . it parse Json to Array[Double] >> >> >> >> >> >> >> *val muCouch = { val e = input.filter( _.id=="mu")(0).content() val b = >> e.getArray("feature_mean") for (i <- 0 to e.getInt("features") ) yield >> b.getDouble(i)}.toArray* >> >> Now the problem is when I want to create a dense vector : >> >> *new DenseVector(muCouch)* >> >> >> I get the following error : >> >> >> *Error:(111, 21) type mismatch; >> found : Array[java.lang.Double] >> required: Array[scala.Double] * >> >> >> Now , I probably get a workaround for that , but I want to get a deeper >> understanding on why it occurs >> >> p.s - I do use collection.JavaConversions._ >> >> Thanks ! >> >> >> >> >> *This email and any files transmitted with it are confidential and >> intended solely for the use of the individual or entity to whom they are >> addressed. Please note that any disclosure, copying or distribution of the >> content of this information is strictly forbidden. If you have received >> this email message in error, please destroy it immediately and notify its >> sender.* >> > > -- *This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. Please note that any disclosure, copying or distribution of the content of this information is strictly forbidden. If you have received this email message in error, please destroy it immediately and notify its sender.*
