Scala鞍座：ScalarTag无等级def

我试着基于saddle的Series类创建一个TimeSeries类。我在测试中遇到以下错误：

java.lang.NoClassDefFoundError: org/saddle/scalar/ScalarTag

我的TimeSeries类：

object TimeSeries {

  def apply[V: ST](values: (LocalDate, V)*): TimeSeries[V] = {
    new TimeSeries(Series(values: _*))
  }
}

class TimeSeries[V: ST](values: Series[LocalDate, V]) { ... }

我的测试：

class TimeSeriesTest extends WordSpec with GivenWhenThen with ShouldMatchersForJUnit {
  "TimeSeries" when {

  val d2014_02_01 = new LocalDate(2014, 2, 1);
  val d2014_02_03 = new LocalDate(2014, 2, 3);
  val d2014_02_04 = new LocalDate(2014, 2, 4);

  "created with data points as arguments" should {
    "have the earliest point as start, the latest as the end, and a length" in {                   
      val a = TimeSeries(d2014_02_01 -> 0.6, d2014_02_03 -> 4.5, d2014_02_04 -> 0.9)

      ...
    }
  }
}

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我猜想这与TimeSeries类中的上下文绑定有关。我不熟悉那个话题。有什么建议吗？

在添加LocalDate命令后，您的代码运行正常（没有错误）。尝试使用此build.sbt：

scalaVersion := "2.10.3"

resolvers ++= Seq(
    "Sonatype Snapshots" at "http://oss.sonatype.org/content/repositories/snapshots",
      "Sonatype Releases" at "http://oss.sonatype.org/content/repositories/releases"
    )

libraryDependencies ++= Seq(
  "org.scalatest" % "scalatest_2.10" % "2.0" % "test",
  "org.scala-saddle" %% "saddle-core" % "1.3.+",
  "joda-time" % "joda-time" % "2.3",
  "org.joda" % "joda-convert" % "1.2",
  "com.novocode" % "junit-interface" % "0.9" % "test"
  // (OPTIONAL) "org.scala-saddle" %% "saddle-hdf5" % "1.3.+"
  )

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Thx，请回答。现在可以了。显然，马鞍不是为了测试，而是为了建造。