scala - 随笔分类 - papering

线程安全 Thread Safety Problem scala concurrency 并发

摘要：小结： 1、基于java并发模型 Scala concurrency is built on top of the Java concurrency model. 2、将每个请求放入一个新的线程 The main drawback with this code is that only one r 阅读全文

posted @ 2019-04-25 11:06 papering 阅读(378) 评论(0) 推荐(0)

scala wordcount kmeans

摘要：scala wordcount kmeans k-means算法的输入对象是d维向量空间的一些点，对一个d维向量的点集进行聚类。 k-means聚类算法会将集合D划分成k个聚簇。阅读全文

posted @ 2018-05-20 17:56 papering 阅读(187) 评论(0) 推荐(0)

优先选择不变性的原因

摘要：Scala In Depth 深入理解Scala 1、判等 2、并发 3、用None不用nul l 阅读全文

posted @ 2018-05-20 17:45 papering 阅读(165) 评论(0) 推荐(0)

优先采用面向表达式编程

摘要：优先采用面向表达式编程阅读全文

posted @ 2018-05-20 16:23 papering 阅读(147) 评论(0) 推荐(0)

lazy

摘要：http://www.scala-lang.org/blog/2017/11/28/view-based-collections.html 阅读全文

posted @ 2017-11-30 23:24 papering 阅读(141) 评论(0) 推荐(0)

mvn 管理 scala

摘要：scala 阅读全文

posted @ 2017-11-28 04:03 papering 阅读(126) 评论(0) 推荐(0)

安装sbt

摘要：http://www.scala-sbt.org/0.13/docs/zh-cn/Installing-sbt-on-Linux.html [root@hadoop1 target]# curl https://bintray.com/sbt/rpm/rpm > bintray-sbt-rpm.repo % Total % Received % Xferd Average Spe... 阅读全文

posted @ 2017-11-24 14:43 papering 阅读(376) 评论(0) 推荐(0)

sbt is a build tool for Scala, Java, and more

摘要：http://www.scala-sbt.org/0.13/docs/index.html sbt is a build tool for Scala, Java, and more. It requires Java 1.6 or later. Install See Installing sbt 阅读全文

posted @ 2017-11-23 20:49 papering 阅读(337) 评论(0) 推荐(0)

2009年4月，Twitter宣布他们已经把大部分后端程序从Ruby迁移到Scala

摘要：w Scala 简介 | 菜鸟教程 http://www.runoob.com/scala/scala-intro.html 阅读全文

posted @ 2017-04-29 01:15 papering 阅读(191) 评论(0) 推荐(0)

So the type system doesn’t feel so static.

摘要：Scala集成了函数编程和对象编程的优点。 SEAMLESS JAVA INTEROP Scala runs on the JVM, so Java and Scala stacks can be freely mixed for totally seamless integration. TYPE 阅读全文

posted @ 2017-04-29 01:10 papering 阅读(195) 评论(0) 推荐(0)

papering

随笔分类 - scala