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class Foo {
implicit def pair2fun2[A, B, C](f: (A, B) => C) =
{p: (A, B) => f(p._1, p._2) }
def foo(f: ((Int, Int)) => Int) = f
def bar(x: Int, y: Int) = x + y
foo({ (x: Int, y: Int) => x + y }) // works
foo(pair2fun2(bar _)) // works
foo(bar _) // error
foo(bar) // same error
}
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