示例文章9
go playground
package main
import (
"fmt"
)
func main() {
fmt.Println("Hello World")
}go playground
package main
import (
"fmt"
"math/rand"
"time"
)
func main() {
for i := 0; i < 10; i++ {
dur := time.Duration(rand.Intn(1000)) * time.Millisecond
fmt.Printf("Sleeping for %v\n", dur)
// Sleep for a random duration between 0-1000ms
time.Sleep(dur)
}
fmt.Println("Done!")
}go playground
package main
import (
"fmt"
"io"
"log"
"net"
"net/http"
"os"
)
func main() {
http.HandleFunc("/hello", func(w http.ResponseWriter, r *http.Request) {
fmt.Fprint(w, "Hello, playground")
})
log.Println("Starting server...")
l, err := net.Listen("tcp", "localhost:8080")
if err != nil {
log.Fatal(err)
}
go func() {
log.Fatal(http.Serve(l, nil))
}()
log.Println("Sending request...")
res, err := http.Get("http://localhost:8080/hello")
if err != nil {
log.Fatal(err)
}
log.Println("Reading response...")
if _, err := io.Copy(os.Stdout, res.Body); err != nil {
log.Fatal(err)
}
}kotlin playground
class Contact(val id: Int, var email: String)
fun main(args: Array<String>) {
val contact = Contact(1, "mary@gmail.com")
println(contact.id)
}kotlin playground
fun mul(a: Int, b: Int): Int {
return a * b
}
fun main(args: Array<String>) {
print(mul(-2, 4))
}rust playground
fn main() {
println!("Hello, world!");
}rust playground
fn main() {
printlnl!("Hello, world!");
}
