266 lines
3.3 KiB
Markdown
266 lines
3.3 KiB
Markdown
---
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title: Golang
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icon: devicon-plain:go
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createTime: 2024/04/22 09:44:30
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permalink: /guide/repl/golang/
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---
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## 概述
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主题提供了 Golang 代码演示，支持 在线运行 Go 代码。
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::: important
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该功能通过将 代码提交到 服务器 进行 编译并执行。
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因此，请不要使用此功能 执行 过于复杂的代码，也不要过于频繁的进行执行请求。
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:::
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## 配置
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该功能默认不启用，你可以通过配置来启用它。
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```ts title=".vuepress/config.ts"
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export default defineUserConfig({
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theme: plumeTheme({
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markdown: {
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repl: {
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go: true,
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},
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},
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})
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})
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```
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## 使用
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使用 `::: go-repl` 容器语法 将 Go 代码块包裹起来。主题会检查代码块并添加执行按钮。
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### 只读代码演示
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golang 代码演示默认是只读的，不可编辑。
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````md
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::: go-repl 自定义标题
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```go
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// your go code
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```
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:::
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````
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### 可编辑代码演示
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如果需要在线编辑并执行，需要将代码块包裹在 `::: go-repl#editable` 容器语法中
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````md
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::: go-repl#editable 自定义标题
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```go
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// your go code
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```
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:::
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````
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## 示例
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### 打印内容
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**输入：**
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````md
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:::go-repl
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```go
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package main
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import (
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"fmt"
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)
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func main() {
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fmt.Println("Hello World")
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}
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```
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:::
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````
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**输出：**
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:::go-repl
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```go
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package main
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import (
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"fmt"
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)
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func main() {
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fmt.Println("Hello World")
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}
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```
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:::
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### 可编辑代码演示
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**输入：**
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````md
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:::go-repl#editable
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```go
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package main
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import (
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"fmt"
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)
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func main() {
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fmt.Println("Hello World")
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}
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```
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:::
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````
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**输出：**
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:::go-repl#editable
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```go
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package main
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import (
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"fmt"
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)
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func main() {
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fmt.Println("Hello World")
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}
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```
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:::
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### 循环随机延迟打印
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**输入：**
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````md
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:::go-repl
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```go
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package main
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import (
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"fmt"
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"math/rand"
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"time"
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)
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func main() {
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for i := 0; i < 10; i++ {
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dur := time.Duration(rand.Intn(1000)) * time.Millisecond
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fmt.Printf("Sleeping for %v\n", dur)
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// Sleep for a random duration between 0-1000ms
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time.Sleep(dur)
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}
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fmt.Println("Done!")
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}
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```
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:::
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````
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**输出：**
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:::go-repl
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```go
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package main
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import (
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"fmt"
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"math/rand"
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"time"
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)
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func main() {
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for i := 0; i < 10; i++ {
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dur := time.Duration(rand.Intn(1000)) * time.Millisecond
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fmt.Printf("Sleeping for %v\n", dur)
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// Sleep for a random duration between 0-1000ms
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time.Sleep(dur)
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}
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fmt.Println("Done!")
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}
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```
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:::
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### 网络请求
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::: go-repl
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```go
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package main
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import (
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"fmt"
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"io"
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"log"
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"net"
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"net/http"
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"os"
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)
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func main() {
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http.HandleFunc("/hello", func(w http.ResponseWriter, r *http.Request) {
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fmt.Fprint(w, "Hello, playground")
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})
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log.Println("Starting server...")
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l, err := net.Listen("tcp", "localhost:8080")
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if err != nil {
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log.Fatal(err)
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}
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go func() {
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log.Fatal(http.Serve(l, nil))
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}()
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log.Println("Sending request...")
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res, err := http.Get("http://localhost:8080/hello")
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if err != nil {
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log.Fatal(err)
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}
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log.Println("Reading response...")
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if _, err := io.Copy(os.Stdout, res.Body); err != nil {
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log.Fatal(err)
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}
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}
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```
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:::
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### 多文件
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::: go-repl
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```go{10-12}
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package main
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import (
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"play.ground/foo"
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)
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func main() {
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foo.Bar()
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}
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-- go.mod --
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module play.ground
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-- foo/foo.go --
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package foo
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import "fmt"
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func Bar() {
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fmt.Println("This function lives in an another file!")
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}
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```
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:::
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