scala
verifying a probability distribution with variable arguments sums to 1
I was wondering how you would write a method in Scala that takes a function f and a list of arguments args where each arg is a range.Suppose I have three arg开发者_开发百科uments (Range(0,2), Range(0,[详细]
2023-04-12 05:02 分类:问答Scala Set Hashcode
Assume we have three sets of strings in Scala. One has elements A,B,C. Two has elements B,C,D. And Three has elements J,K,I.[详细]
2023-04-12 04:57 分类:问答Syntax for partial application of curried functions with reverse-associative infix notation
In other words, is there a good reason why this shouldn\'t compile? def f(xs: List[Int]) = xs.foldLeft(0) _// OK[详细]
2023-04-12 04:41 分类:问答Using akka futures and actors for parallelizing a list
I want to send a list of messages to an actor, receive a reply immediately in a future and then wait for all futures to complete before returning to the calling method. From reading the akka docs, I b[详细]
2023-04-12 04:39 分类:问答scala speed when using get() method on hash tables? (are temporary Option() objects generated?)
I am converting some code to Scala.It\'s code that sits in an inner loop with very large amounts of data so it needs to be fast, and it involves looking up keys in a hash table and computing probabili[详细]
2023-04-12 04:36 分类:问答How to convert a Map[K, Option[V]] to Map[K, V] discarding Nones in Scala? [duplicate]
This question already has answers here: Closed 11 years ago. Possible Duplicate: Better way of converting a Map[K, Option[V]] to a Map[K,V][详细]
2023-04-12 04:19 分类:问答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Using constructor where function expected
Having two simple classes taking Int as an a开发者_JAVA技巧rgument: case class Foo(i: Int) class Bar(j: Int)[详细]
2023-04-12 03:19 分类:问答Can we infer generic output type?
Consider the following Scala code def NOTImplementedIn[T<: AnyRef](t:T):String = throw new Exception(t.getClass.getName+\": Input type not implemented\")[详细]
2023-04-12 03:14 分类:问答the += operator on immutable Set
When i do e.g: var airlines = Set(\"Qantas\", \"JetStar\", \"Air NZ\") airlines += \"Virgin\" airlines is an immutable Set.[详细]
2023-04-12 03:08 分类:问答