A quick tour of JSON libraries in Scala Update (18.11.2015): added spray-json-shapeless libraryUpdate (06.11.15): added circe library Some time ago I wrote a post on relational database access in Scala since I was looking for a library and there were…

https://avro.apache.org/docs/current/ Introduction Apache Avro™ is a data serialization system. Avro provides: Rich data structures. A compact, fast, binary data format. A container file, to store persistent data. Remote procedure call (RPC). Simple…

1.为什么是json4s 从json4s的官方描述 At this moment there are at least 6 json libraries for scala, not counting the java json libraries. All these libraries have a very similar AST. This project aims to provide a single AST to be used by other scala json librar…

import scala.util.parsing.json.JSON._ import scala.io.Source object ScalaJsonParse { def main(args: Array[String]): Unit = { var tt = Map.empty[String, Any] val tree = parseFull(Source.fromFile("/data/result.json").mkString) tt = tree match { ca…

使用json4s的框架,包括spark,flink 1.org.json4s 引入pom的方法 对于本地支持,引入以下依赖项添加到pom中 <dependency> <groupId>org.json4s</groupId> <artifactId>json4s-jackson_${scala.version}</artifactId> <version>{latestVersion}</version> </dep…

Awesome Go      financial support to Awesome Go A curated list of awesome Go frameworks, libraries and software. Inspired by awesome-python. Contributing Please take a quick gander at the contribution guidelines first. Thanks to all contributors; you…

本贴是我摘抄自国外网站,用作备忘,也作为分享! Similarities between Scala and Java Following are some of the major similarities between Scala and Java programming language : 1) Both are JVM based language, Scala produce same byte code as Java and runs on Java Virtual Machi…

在个人学习scala的过程中,产生了写一系列随笔的想法,这些随笔包括:翻译自官网.其他英文网站的文章以及自己的心得体会,本文章作为这个系列中的第一个. 由于本人能力所限,以及对scala还处于初级阶段,有任何错误或者问题,欢迎大家指正,多谢. 原文链接:http://docs.scala-lang.org/tour/tour-of-scala.html scala是一个现代的多范式编程语言,通过简洁.优雅和类型安全的方式搭建通用编程模型.它巧妙的结合了面向对象和函数式编程特性. scala是面向…

建筑物配置信息: case class BuildingConfig(buildingid: String, building_height: Long, gridcount: Long, gis_display_name: String, wear_loss: Double, path_loss: Double) extends Serializable 向hdfs写入json文件: sql( s"""|select buildingid, |height, |gridco…

前面两节介绍了JSON和YAML,本文则对下面的文章做一个中英文对照翻译. Comparison between JSON and YAML for data serialization用于数据序列化的JSON和YAML之比较 Chapter 1 Introduction | 第一章 概述 This paper discusses and compares different serialization formats in computer science. In addition to a…