Why does this explicit call of a Scala method allow it to be implicitly resolved?
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by Matt R
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Published on 2010-04-28T16:07:02Z
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2010/04/28
16:23 UTC
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Why does this code fail to compile, but compiles successfully when I uncomment the indicated line? (I'm using Scala 2.8 nightly). It seems that explicitly calling string2Wrapper
allows it to be used implicitly from that point on.
class A {
import Implicits.string2Wrapper
def foo() {
//string2Wrapper("A") ==> "B" // <-- uncomment
}
def bar() {
"A" ==> "B"
"B" ==> "C"
"C" ==> "D"
}
object Implicits {
implicit def string2Wrapper(s: String) = new Wrapper(s)
class Wrapper(s: String) {
def ==>(s2: String) {}
}
}
}
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