分享一个Golang 学习站点：Go by Example，示例，源码，注释

分享一个Golang 学习站点：Go by Example，示例，源码，注释 很不错的一个网站和工具。主要内容包括： 1、为 Golang 各个知识点而写的小程序（放在 play.golang.org ）； 2、适当的注释； 3、整站开源，从github clone 后，读者可利用内建的工具生成本地静态文件，甚至可以生成一个网站。 网址：https://gobyexample.com/ 源码：https://github.com/mmcgrana/gobyexample 知识点目录 Hello World Values Variables Constants For If/Else Switch Arrays Slices Maps Range Functions Multiple Return Values Variadic Functions Closures Recursion Pointers Structs Methods Interfaces Errors Goroutines Channels Channel Buffering Channel Synchronization Channel Directions Select Timeouts Non-Blocking Channel Operations Closing Channels Range over Channels Timers Tickers Worker Pools Rate Limiting Atomic Counters Mutexes Stateful Goroutines Sorting Sorting by Functions Panic Defer Collection Functions String Functions String Formatting Regular Expressions JSON Time Epoch Time Formatting / Parsing Random Numbers Number Parsing URL Parsing SHA1 Hashes Base64 Encoding Reading Files Writing Files Line Filters Command-Line Arguments Command-Line Flags Environment Variables Spawning Processes Exec'ing Processes Signals Exit