Are you trying to create function (m: MyType) => MyObject.myMethod(m.myAttribute)
using underscore?
If so, the problem is that MyObject.myMethod((_:MyType).myAttribute)
means MyObject.myMethod((m:MyType) => m.myAttribute)
.
You can use infix notation:
MyObject myMethod (_:MyType).myAttribute
Proof it works:
scala> case class MyType(myAttribute: Int)
defined class MyType
scala> object MyObject {
| def myMethod(a: Int) = a.toString
| }
defined module MyObject
scala> MyObject myMethod (_:MyType).myAttribute
res0: MyType => java.lang.String = <function1>
scala> res0(MyType(1))
res1: java.lang.String = 1
scala> MyObject myMethod (MyType(1))
<console>:1: error: type mismatch;
found : MyType
required: Int
MyObject myMethod (_:MyType)
^