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As discussed here: http://www.nabble.com/Companion-object-constructor-visibility-td24342096.html
//Simplified example:
class Foo private (val value : Int)
abstract class Bar(val ctor : (Int) => Foo)
object Foo extends Bar(new Foo(_)) //<--- ILLEGAL ACCESS
//however the following is legal:
class Foo private (val value : Int)
abstract class Bar{
var ctor : (Int) => Foo
}
object Foo extends Bar{
ctor = new Foo(_) //<--- Legal access
}
The constructor invocation of Bar is done within the scope of object Foo's constructor, and therefor the private constructor of Foo should be visible and accessible.
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