go

Convert a byte array to a string array [duplicate]

由 こ雲淡風輕ζ 提交于 2021-01-02 18:25:08
问题 This question already has answers here : Convert a byte to a string in Go (5 answers) Closed 2 years ago . In the following method, I attempted to redefine the string method on the IPAddr type by appending bytes to an array of string type IPAddr [4]byte func (ip IPAddr) String() string { var s []string for _, i := range ip { s = append(s, i) } return fmt.Sprintf(strings.Join(s, ".")) } cannot use i (type byte) as type string in append playground 回答1: Since your type is an array with a small

Convert a byte array to a string array [duplicate]

由 自作多情 提交于 2021-01-02 18:24:08
问题 This question already has answers here : Convert a byte to a string in Go (5 answers) Closed 2 years ago . In the following method, I attempted to redefine the string method on the IPAddr type by appending bytes to an array of string type IPAddr [4]byte func (ip IPAddr) String() string { var s []string for _, i := range ip { s = append(s, i) } return fmt.Sprintf(strings.Join(s, ".")) } cannot use i (type byte) as type string in append playground 回答1: Since your type is an array with a small

如何写出高质量的Go代码

由 荒凉一梦 提交于 2021-01-02 09:43:19
当我们在开发一个大型的Go项目时，往往很难去控制大家都能够写出来高质量的代码，但是我们还是经常会在脑子里面有这些想法： 1. 格式化 2. Imports 3. Error处理 4. 文档注释 5. 导出函数和结构体等 6. unused的代码必须清除 7. 控制代码的复杂度，例如一个函数不能多于50行 8. 重复的代码抽象出来 这里有非常多的东西需要去记住，那么有没有一个工具可以帮助我们呢？ 今天就给大家推荐这个工具：gometalinter https://github.com/alecthomas/gometalinter 这个工具基本上集成了目前市场上所有的检测工具，然后可以并发的帮你静态分析你的代码： go vet — Reports potential errors that otherwise compile. go vet — shadow — Reports variables that may have been unintentionally shadowed. gotype — Syntactic and semantic analysis similar to the Go compiler. deadcode — Finds unused code. gocyclo — Computes the cyclomatic complexity of

How to make Go modules semantic import versioning v2+ work with vanity import path

由 自古美人都是妖i 提交于 2021-01-02 07:57:28
问题 We are trying to migrate our Go code base to go modules and I can't figure out how to make it work with vanity import paths. With dep Until now our dependency management tool has been dep . We would place a Gopkg.toml file in our project root, and would define a dependency like: [[constraint]] name = "mycompany.com/some-lib" version = "3.0.0" As you can see, we use a so-called vanity import path for our own packages. In fact, our code is actually hosted on a private git server altogether. So

Check errors when calling http.ResponseWriter.Write()

由 守給你的承諾、 提交于 2021-01-02 05:46:35
问题 Say I have this http handler: func SomeHandler(w http.ResponseWriter, r *http.Request) { data := GetSomeData() _, err := w.Write(data) } Should I check the error returned by w.Write ? Examples I've seen just ignore it and do nothing. Also, functions like http.Error() do not return an error to be handled. 回答1: It's up to you. My advice is that unless the documentation of some method / function explicitly states that it never returns a non- nil error (such as bytes.Buffer.Write()), always check

Go 开源说第二期：GORM 剖析与最佳实践

由 試著忘記壹切 提交于 2021-01-01 18:41:27
写在前面 随着Go在中国越来越多的应用场景，我们中国的Gopher开发的开源项目也越来越多，目前在github上面有大量的Go写的开源项目，但是很多时候一个好的项目让别人获知，同时让大家了解背后的设计设计原理，其实是很困难的一件事情。 基于这样的背景，我们GoCN社区推出这个《Go 开源说》，每两周会播出一期。希望通过这样的平台帮助到我们开源的作者，有一个平台去推广我们的开源项目，第二说说背后的设计原理和理念，产品优越性等。第三让我们用户可以了解到更多好玩有用的项目，避免自己造轮子重复发明，当然也希望通过这些分享让大家学习到每一个开源项目背后的设计理念，拥抱开源，做出自己的产品。 —— Asta 本期开源先锋 张金柱 https://github.com/jinzhu 就职于字节跳动基础架构语言团队 目前从事字节跳动的性能分析、优化及 GORM 开发相关工作 关于 GORM https://github.com/go-gorm/gorm 设计简洁、功能强大、自由扩展的全功能 ORM 设计原则 API 精简、测试优先、最小惊讶、灵活扩展、无依赖 可信赖 功能完善 关联：一对一、一对多、单表自关联、多态关联；Preload、Joins 预加载；关联模式 事务：嵌套事务, Save Point Hooks、Callbacks 自由扩展 多数据库、读写分离、Prometheus

Use job with time and timeout

由 陌路散爱 提交于 2021-01-01 09:11:29
问题 I use the following sample code which works, now I want that each job be able to print the time it took to execute (it's better as generic that not each job will need to use the code of start := time.Now() took := time.Since(start).Milliseconds() And also provide a timeout for a job, for example, if it takes more then 10 seconds to kill it or stop it. package main import ( "encoding/json" "fmt" "github.com/gammazero/workerpool" ) var numWorkers = 10 type MyReturnType struct { Name string Data

Use job with time and timeout

由 我的梦境 提交于 2021-01-01 09:07:36
问题 I use the following sample code which works, now I want that each job be able to print the time it took to execute (it's better as generic that not each job will need to use the code of start := time.Now() took := time.Since(start).Milliseconds() And also provide a timeout for a job, for example, if it takes more then 10 seconds to kill it or stop it. package main import ( "encoding/json" "fmt" "github.com/gammazero/workerpool" ) var numWorkers = 10 type MyReturnType struct { Name string Data

Use job with time and timeout

由 倖福魔咒の 提交于 2021-01-01 09:04:18
问题 I use the following sample code which works, now I want that each job be able to print the time it took to execute (it's better as generic that not each job will need to use the code of start := time.Now() took := time.Since(start).Milliseconds() And also provide a timeout for a job, for example, if it takes more then 10 seconds to kill it or stop it. package main import ( "encoding/json" "fmt" "github.com/gammazero/workerpool" ) var numWorkers = 10 type MyReturnType struct { Name string Data
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