Question

How do I get the function value f of an instance method?

class X(i : Int){
    def method(y : Int) = y + i
}

val x = new X(10)
val f : (Int) => Int = ?

val r = x.method(2)
val r2 = f(2)

Calling x.method(2) and f(2) would be the same method call.

Answer 1

scala> class X(i : Int){ def method(y : Int) = y + i }

defined class X

scala> val x = new X(10)

x: X = X@15b28d8

scala> val f = x.method _

f: (Int) => Int = <function>

scala> val r = x.method(2)

r: Int = 12

scala> val r2 = f(2)

r2: Int = 12