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andrewharmellaw/tracing_trace_2.scala

Last active December 3, 2015 10:58
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tracing_trace_2.scala
def foldLeft[A,B](as: List[A], b: B)(f: (B, A) => B): B = as match {
case Nil => b
case h :: t => foldLeft(t, f(b, h))(f)
}
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