scala-2.9

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Reference a constructor argument from a trait

In Scala, is it possible for a trait to reference a named constructor argument of the class it is mixed into? The code below doesn\'t compile because ModuleDao\'s constructor argument is not a val as[详细]

2023-04-12 03:27 分类：问答
ParVector map is not running in parallel

I have a bit of code like: val data = List(obj1, obj2, obj3, obj4, ...).par.map { ... } and the ParVector is roughly 12 elements large. I noticed that all of my work is being done in the main threa[详细]

2023-04-08 01:59 分类：问答
Strange behavior of Set4 in scala 2.9.1?

Making a migration from 2.8.1 to 2.9.1 found interesting thing. Tried to write this in console: >>import collection.immutable.Set.Set4[详细]

2023-04-05 06:18 分类：问答
What are main changes from scala 2.8.1 to scala 2.9.1?

I am working on project implemented in scala 2.8.1, want to migrate to scala 2.9.1 and use akka-actors libraries instead of standard, but didn\'t find good summary of main changes, here what I found:[详细]

2023-04-05 04:29 分类：问答
Why do case classes extend only Product and not Product1, Product2, ..., ProductN?

after I learned that case classes extend Product, I wondered why they do not extend ProductN. E.g., given a code like:[详细]

2023-04-03 02:30 分类：问答
Scala case class constructor with WrappedArray argument

I have the following scenario: sealed abstract class Type(val inUse: Boolean) case class IntTy(override val inUse: Boolean) extends Type(inUse)[详细]

2023-04-02 15:27 分类：问答
Scalac Memory Usage

I\'ve been trying to compile the NeHe tutorial for scala (link) and scalac (2.9.0, linux) uses up all my ram and then some. I basically can\'t compile it.[详细]

2023-04-01 21:46 分类：问答
Confusing Scala Dynamic code snippet

I came across the following code snippet on the Scala mailing list: scala> class DynamicImpl(x: AnyRef) extends开发者_如何学运维 Dynamic {[详细]

2023-03-22 12:21 分类：问答
Methods in trait become volatile methods when mixed in concrete classes in 2.9.0-1 but not 2.8.1

I noticed this breaking (for me using it with OGNL) change in 2.9.0-1: I find that, in 2.9, methods declared in a trait become volatile when mixed in a class:[详细]

2023-03-22 02:50 分类：问答
Case classes and Proxy behaviour in Scala 2.9

On migrating our code to Scala 2.9 we\'ve found large swathes of it that didn\'t work and failed silently. We tracked it down to case classes that extend Proxy not being equal. In our code we don\'t e[详细]

2023-03-19 13:13 分类：问答