Scala reduce fold scan_def reduce[a1 >: a](op: (a1, a1) => a1): a1 = redu-CSDN博客

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文章浏览阅读472次。reduce 化简将二元函数引用于集合中的函数。// 源码 reducedef reduce[A1 &gt;: A](op: (A1, A1) =&gt; A1): A1 = reduceLeft(op)// 源码 reduceLeftoverride def reduceLeft[B &gt;: A](f: (B, A) =&gt; B)..._def reduce[a1 >: a](op: (a1, a1) => a1): a1 = reduceleft(op)

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Scala reduce fold scan_def reduce[a1 &gt;: a](op: (a1, a1) =&gt; a1): a1 = redu-CSDN博客

Scala reduce fold scan_def reduce[a1 >: a](op: (a1, a1) => a1): a1 = redu-CSDN博客