7 lines
178 B
Scala
7 lines
178 B
Scala
def Y[A, B](f: (A => B) => (A => B)): A => B = {
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case class W(wf: W => (A => B)) {
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def apply(w: W): A => B = wf(w)
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}
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val g: W => (A => B) = w => f(w(w))(_)
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g(W(g))
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}
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