Re: Strange problem with Scala 2.10

     Hello,

  Normally, REPL does not put quotations around Strings, or does it? So the
quotation marks are part of the Strings, then, right? Try:

c.asInstanceOf[Map[String, Any]].apply("\"features\"")

  If it's not that, I would try println(c.getClass) and println(c).

  And:

  val map = c.asInstanceOf[Map[String, Any]]
  map(map.keys.head)

     Best, Oliver



On Thu, Feb 26, 2015 at 6:54 PM, Jiakui Wang <[email protected]> wrote:

> I got the variable c from previous code, and it behaves very strangely:
>
> scala> c.asInstanceOf[Map[String, Any]].keys
> res24: Iterable[String] = *Set("label", "features")*
>
> scala> c.asInstanceOf[Map[String, Any]].apply("features")
> *java.util.NoSuchElementException: key not found: features*
> at scala.collection.MapLike$class.default(MapLike.scala:228)
> at scala.collection.AbstractMap.default(Map.scala:58)
> at scala.collection.MapLike$class.apply(MapLike.scala:141)
> at scala.collection.AbstractMap.apply(Map.scala:58)
> at .<init>(<console>:14)
> at .<clinit>(<console>)
> at .<init>(<console>:7)
> at .<clinit>(<console>)
> at $print(<console>)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:483)
> at scala.tools.nsc.interpreter.IMain$ReadEvalPrint.call(IMain.scala:734)
> at scala.tools.nsc.interpreter.IMain$Request.loadAndRun(IMain.scala:983)
> at scala.tools.nsc.interpreter.IMain.loadAndRunReq$1(IMain.scala:573)
> at scala.tools.nsc.interpreter.IMain.interpret(IMain.scala:604)
> at scala.tools.nsc.interpreter.IMain.interpret(IMain.scala:568)
> at scala.tools.nsc.interpreter.ILoop.reallyInterpret$1(ILoop.scala:760)
> at scala.tools.nsc.interpreter.ILoop.interpretStartingWith(ILoop.scala:805)
> at scala.tools.nsc.interpreter.ILoop.command(ILoop.scala:717)
> at scala.tools.nsc.interpreter.ILoop.processLine$1(ILoop.scala:581)
> at scala.tools.nsc.interpreter.ILoop.innerLoop$1(ILoop.scala:588)
> at scala.tools.nsc.interpreter.ILoop.loop(ILoop.scala:591)
> at
> scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply$mcZ$sp(ILoop.scala:882)
> at
> scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply(ILoop.scala:837)
> at
> scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply(ILoop.scala:837)
> at
> scala.tools.nsc.util.ScalaClassLoader$.savingContextLoader(ScalaClassLoader.scala:135)
> at scala.tools.nsc.interpreter.ILoop.process(ILoop.scala:837)
> at scala.tools.nsc.interpreter.ILoop.main(ILoop.scala:904)
> at xsbt.ConsoleInterface.run(ConsoleInterface.scala:69)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:483)
> at sbt.compiler.AnalyzingCompiler.call(AnalyzingCompiler.scala:102)
> at sbt.compiler.AnalyzingCompiler.console(AnalyzingCompiler.scala:77)
> at sbt.Console.sbt$Console$$console0$1(Console.scala:23)
> at
> sbt.Console$$anonfun$apply$2$$anonfun$apply$1.apply$mcV$sp(Console.scala:24)
> at sbt.TrapExit$.sbt$TrapExit$$executeMain$1(TrapExit.scala:33)
> at sbt.TrapExit$$anon$1.run(TrapExit.scala:42)
>
>
> Any idea about the problem?
>
> Thanks
>
>
>
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-- 
Oliver Ruebenacker
Solutions Architect at Altisource Labs <http://www.altisourcelabs.com/>
Be always grateful, but never satisfied.

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