placeholders

gistfile1.scala

def f = println("hi")
val f2 = f _ // partially applies it
f() // hi
f2() // hi

val f = () => println("hi")
val f2 = f _ // wraps it in a function
f() // hi
f2()() // hi

val x = 4
val x2 = x _ // also gets wrapped in a function
println(x)
println(x2())