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class Foo
class Test {
def update[B](x : B, b : Int): Unit = {}
def apply[B](x : B) = 1
}
class Test2 {
type B = Foo
def update(x : B, b : Int): Unit = {}
def apply(x : B) = 1
}
object Test {
def main(a : Array[String]): Unit = {
val a = new Test
val f = new Foo
a(f) = 1 //works
a(f) = a(f) + 1 //works
a(f) += 1 //error: reassignment to val
}
}
object Test2 {
def main(args : Array[String]): Unit = {
args(0) += "a"
val a = new Test2
val f = new Foo
a(f) = 1 //works
a(f) = a(f) + 1 //works
a(f) += 1 //error: reassignment to val
}
}
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