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Here's a quick look at how to use the Scala Map class, with a colllection of Map class examples. The immutable Map class is in scope by default, so yo 阅读全文
posted @ 2016-07-05 22:38
XGogo
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The Scala List class filter method implicitly loops over the List/Seq you supply, tests each element of the List with the function you supply. Your fu 阅读全文
posted @ 2016-07-05 22:36
XGogo
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Scala List FAQ: How do I add elements to a Scala List? This is actually a trick question, because you can't add elements to a ScalaList; it's an immut 阅读全文
posted @ 2016-07-05 22:20
XGogo
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Scala List FAQ: Can you share some Scala List class examples? The Scala List class may be the most commonly used data structure in Scala applications. 阅读全文
posted @ 2016-07-05 22:16
XGogo
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Scala List FAQ: How do I add elements to a Scala List? This is actually a trick question, because you can't add elements to a ScalaList; it's an immut 阅读全文
posted @ 2016-07-05 22:12
XGogo
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Scala List/sequence FAQ: How do I iterate over a Scala List (or more generally, a sequence) using theforeach method or for loop? There are a number of 阅读全文
posted @ 2016-07-05 22:10
XGogo
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Scala List FAQ: How do I merge a List in Scala? NOTE: I wrote the solutions shown below a long time ago, and they are not optimal. I'll update this ar 阅读全文
posted @ 2016-07-05 22:09
XGogo
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Scala List class FAQ: How do I create a List in Scala? You can create a Scala List in several different ways, including these approaches: Lisp style J 阅读全文
posted @ 2016-07-05 22:08
XGogo
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Spark history Server产生背景 以standalone运行模式为例,在运行Spark Application的时候,Spark会提供一个WEBUI列出应用程序的运行时信息;但该WEBUI随着Application的完成(成功/失败)而关闭,也就是说,Spark Applicatio 阅读全文
posted @ 2016-07-05 19:29
XGogo
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