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jawher/flatMap with type params.sbt

Created January 14, 2012 23:01
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Really Scala ? Really ?
Raw
flatMap with type params.sbt
[info] Compiling 20 Scala sources to /Users/jawher/Dropbox/coding/moulder-s/target/scala-2.9.1/classes...
[error] /Users/jawher/Dropbox/coding/moulder-s/src/main/scala/moulder/moulds/Repeater.scala:19: type mismatch;
[error] found : (A, Int) => List[org.jsoup.nodes.Node]
[error] required: (A, Int) => scala.collection.GenTraversableOnce[org.jsoup.nodes.Node]
[error] data.zip(0 until data.length).flatMap[Node, List[Node]]((item: A, index: Int) => {
[error] ^
Raw
flatMap without type params.sbt
[info] Compiling 20 Scala sources to /Users/jawher/Dropbox/coding/moulder-s/target/scala-2.9.1/classes...
[error] /Users/jawher/Dropbox/coding/moulder-s/src/main/scala/moulder/moulds/Repeater.scala:19: type mismatch;
[error] found : (A, Int) => List[org.jsoup.nodes.Node]
[error] required: (A, Int) => scala.collection.GenTraversableOnce[?]
[error] data.zip(0 until data.length).flatMap((item: A, index: Int) => {
[error] ^
@lpereir4
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scala> val f: Function1[Tuple2[Int, Int], List[Int]] = (a,b) => 1::Nil
<console>:7: error: wrong number of parameters; expected = 1
       val f: Function1[Tuple2[Int, Int], List[Int]] = (a,b) => 1::Nil
                                                             ^

Limits of syntactic sugar : 2-ary function or 1-ary function taking a tuple ?

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