Erlang 20 指南:开始 | Guide: Getting started 目录 1.简介(入门) | 1. Introduction (Getting started) 2.顺序编程 | 2. Sequential Programming 3.并发编程 | 3. Concurrent Programming 4.健全 | 4. Robustness 5.记录和宏 | 5. Records and Macros