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class Test {
def m(i: Int) = i
def expectWild[A](f: A) = ???
def expectFun[A](f: A => Int) = ???
expectWild((i => m(i))) // manual eta expansion
expectWild(m(_)) // have to undo eta expansion with wildcard expected type
expectFun(m(_)) // have to undo eta expansion with function expected type
}
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