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Is this a scala bug, or am I doing something wrong

I have code that works in scala 2.10, but with an approval error in scala 2.11 does not work. I would like to receive some feedback on whether I am an idiot if something has changed, or if there is an error in 2.11 (hardly, I know.)

This is a simple thing. I have a word file that is being read, and the letters are split into a card.

for (token <- logData.getLines().flatMap(x => x.split("\\s+"))) {
        // Ignore empty lines which appear in the word count as ""
        if (token != "") {
            words += 1
            counts(token) += 1
            for (letters <- token.split("")) {
                if (isOrdinary(letters)) {
                    letterCounts(letters) += 1
                }
            }
        }
    }

After reading and comparing the letters with the letters, I would now like to extract the letter with the maximum frequency. I am trying to do this with

val maxLetterCounts = fixedLetterCounts.values.max
    val highestLetter = letterCounts.filter((t) => t._2 == maxLetterCounts)

and I get an error when trying to start the filter. This works in scala 2.10, but in scala 2.11 I get

java.lang.AssertionError: assertion failed: List(value _2$mcI$sp, value _2$mcI$sp)
at scala.reflect.internal.Symbols$Symbol.suchThat(Symbols.scala:1916)
at scala.tools.nsc.transform.SpecializeTypes$$anon$2.matchingSymbolInPrefix$1(SpecializeTypes.scala:1460)
at scala.tools.nsc.transform.SpecializeTypes$$anon$2.transformSelect$1(SpecializeTypes.scala:1483)
at scala.tools.nsc.transform.SpecializeTypes$$anon$2.transform1(SpecializeTypes.scala:1579)
at scala.tools.nsc.transform.SpecializeTypes$$anon$2$$anonfun$transform$3.apply(SpecializeTypes.scala:1428)
at scala.tools.nsc.transform.SpecializeTypes$$anon$2$$anonfun$transform$3.apply(SpecializeTypes.scala:1428)
at scala.tools.nsc.transform.SpecializeTypes$$anon$2.reportError(SpecializeTypes.scala:1420)
at scala.tools.nsc.transform.SpecializeTypes$$anon$2.transform(SpecializeTypes.scala:1428)
at scala.tools.nsc.transform.SpecializeTypes$$anon$2.transform(SpecializeTypes.scala:1371)
at scala.reflect.internal.Trees$class.itransform(Trees.scala:1347)
at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:16)
at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:16)
at scala.reflect.api.Trees$Transformer.transform(Trees.scala:2555)
at scala.tools.nsc.transform.TypingTransformers$TypingTransformer.transform(TypingTransformers.scala:44)
at scala.tools.nsc.transform.SpecializeTypes$$anon$2.transform1(SpecializeTypes.scala:1712)
at scala.tools.nsc.transform.SpecializeTypes$$anon$2$$anonfun$transform$3.apply(SpecializeTypes.scala:1428)
at scala.tools.nsc.transform.SpecializeTypes$$anon$2$$anonfun$transform$3.apply(SpecializeTypes.scala:1428)
at scala.tools.nsc.transform.SpecializeTypes$$anon$2.reportError(SpecializeTypes.scala:1420)
at scala.tools.nsc.transform.SpecializeTypes$$anon$2.transform(SpecializeTypes.scala:1428)
at scala.tools.nsc.transform.SpecializeTypes$$anon$2.transformSelect$1(SpecializeTypes.scala:1467)
at scala.tools.nsc.transform.SpecializeTypes$$anon$2.transform1(SpecializeTypes.scala:1579)
at scala.tools.nsc.transform.SpecializeTypes$$anon$2$$anonfun$transform$3.apply(SpecializeTypes.scala:1428)
at scala.tools.nsc.transform.SpecializeTypes$$anon$2$$anonfun$transform$3.apply(SpecializeTypes.scala:1428)
at scala.tools.nsc.transform.SpecializeTypes$$anon$2.reportError(SpecializeTypes.scala:1420)
at scala.tools.nsc.transform.SpecializeTypes$$anon$2.transform(SpecializeTypes.scala:1428)
at scala.tools.nsc.transform.SpecializeTypes$$anon$2.transform(SpecializeTypes.scala:1371)
at scala.reflect.internal.Trees$class.itransform(Trees.scala:1347)
at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:16)
at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:16)
at scala.reflect.api.Trees$Transformer.transform(Trees.scala:2555)

I somewhat truncated the error.

Any idea why this works and gives me back the map that I want in 2.10, but it splits into 2.11?

thank

Dean

P.S. , scala, -, , , , , .

+4
1

scala - SI-9099

/s: scala 2.11.6

+1

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