Reverse Lambda, because fuck the next guy to read this

gistfile1.txt

scala> class Foo {                         
     | def <=: (f: (Int) => Boolean) = f(1)
     | }                                   
defined class Foo

scala> val f = new Foo()                   
f: Foo = Foo@a06812d

scala> { x:Int => true } <=: f             
res5: Boolean = true

scala>