Golang

go spec

地址：https://go.dev/ref/spec

go blog

Russ Cox，Rob Pike

主题有视频完成时间地址核心
goprotobufNhttps://go.dev/blog/protobuf
JSON-RPCNhttps://go.dev/blog/json-rpc
斯坦福Rob Pike talkYhttps://go.dev/blog/new-talk-and-tutorials
Google IO大会Yhttps://go.dev/blog/io2010
声明格式Nhttps://go.dev/blog/declaration-syntax
并发模型Nhttps://go.dev/blog/codelab-share
Defer, Panic, and RecoverNhttps://go.dev/blog/defer-panic-and-recover
并发模式：超时Nhttps://go.dev/blog/concurrency-timeouts
项目实战：SmartTwitterNhttps://go.dev/blog/smarttwitter
DebugNhttps://go.dev/blog/debug-status

go std

标准库 https://pkg.go.dev/std

  1. 操作字符串重要的包：bytes，strings，strconv，unicode
  2. 比较字节slice：bytes.Equals
  3. strings.Map 对每个字符使用函数
  4. 格式化 fmt
  5. 操作系统 os
  6. 缓冲io：bufio
  7. io工具类：ioutil
  8. 数学：math
  9. 随机数：math/rand
  10. 图片：image
  11. http：net/http
  12. 时间：time
  13. 同步：sync
  14. 命令行：flag
  15. json：encoding/json
  16. 大数：math/big
  17. sha265摘要：crypto/sha256
  18. 排序 sort
  19. 模板 text/template html/template
  20. 日志：log
  21. 正则：regexp
  22. 运行时：runtime 转储栈：Stack
  23. rpc：net/rpc jsonrpc net/rpc/jsonrpc
  24. 序列化 encode/gob

扩展库 https://pkg.go.dev/golang.org/x

  1. exp：slices，maps

  2. sync：errgroup，semaphore，syncmap，singleflight

go talks

Go at Google: Language Design in the Service of Software Engineering https://go.dev/talks/2012/splash.article

GopherCon 2016: Francesc Campoy - Understanding nil https://www.youtube.com/watch?v=ynoY2xz-F8s

Another Go at Language Design https://www.youtube.com/watch?v=7VcArS4Wpqk

Null References The Billion Dollar Mistake https://www.youtube.com/watch?v=YYkOWzrO3xg

Errors are values https://go.dev/blog/errors-are-values

effective go

go语言源码：https://go.dev/src/

talks：https://go.dev/talks/

格式化：gofmt

注释：块注释，行注释 https://go.dev/doc/comment

名字：包名，Getter，接口名字

分号：

控制结构：for，swtich，if，break，contine，select

方法：函数和指针

Embedding（嵌入）

接口转换，类型声明

下划线标识符

Do not communicate by sharing memory; instead, share memory by communicating. CSP Linux Pipeline

function literals are closures

channel用来同步的，信号结束的。

带缓冲的channel可以用作信号量。

Go是一个并发语言，而不是一个并行语言，不是所有并行问题都适用于Go模型。详见讨论：Concurrency is not parallelism https://go.dev/blog/waza-talk

泄露的Buffer

type switch

真实库函数应该避免panic。

recover always returns nil unless called directly from a deferred function

recover is only useful inside deferred function

re-panic idiom changes the panic value if an actual error occurs

Go is powerful enough to make a lot happen in a few lines

扩展

Concurrency is not parallelism https://go.dev/talks/2010/io/balance.go

https://go.dev/talks/2012/waza.slide#1

Communicating sequential processes C. A. R. Hoare 1978

channel没有locking

关键想法：数据结构使用channel和goroutines去构建并发， 结果是扩展性，简单，正确，并且没有锁。这种架构的好处。

Concurrency is about dealing with lots of things at once. Parallelism is about doing lots of things at once.

Don't communicate by sharing memory, Share memory by communicate.

Go Concurrency Patterns https://go.dev/talks/2012/concurrency.slide#1

channel是同步工具，同步拆解为 send receive

并发模式：

Generator：Function return a channel

Channel as a handler on a service

Multiplexing

Restoring sequencing

select

timeout using select

timeout for whole conversation using select

receive on quit channel

Daisy chain：菊花链

Advanced Go Concurrency Patterns https://go.dev/talks/2013/advconc.slide#1

go run -race main.go Race Detector(Sync Issues)

for{

select {

}

}

select:no lock , no condtion

代码规范

Google Go 规范：https://google.github.io/styleguide/go/

pb最佳实践：https://protobuf.dev/programming-guides/dos-donts/

api最佳实践：https://protobuf.dev/programming-guides/api/

Go在线书籍

https://go-kratos.dev/ go微服务框架

Go语言高级编程：https://chai2010.cn/advanced-go-programming-book/index.html

Go 语言编程之旅：https://golang2.eddycjy.com/

Go语言各种文档： https://learnku.com/go/docs

Go语言原本 ：https://golang.design/under-the-hood/