Go 言語と従来のプログラミング言語の類似点、相違点、相違点を探る

package main

import (
    "fmt"
    "time"
)

func printNumbers() {
    for i := 0; i < 5; i++ {
        fmt.Println(i)
        time.Sleep(time.Second)
    }
}

func main() {
    go printNumbers()
    go printNumbers()

    time.Sleep(5 * time.Second)
}

public class Main {
    public static void main(String[] args) {
        new Thread(() -> {
            for (int i = 0; i < 5; i++) {
                System.out.println(i);
                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }).start();

        new Thread(() -> {
            for (int i = 0; i < 5; i++) {
                System.out.println(i);
                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }).start();
    }
}

package main

import (
    "errors"
    "fmt"
)

func divide(a, b float64) (float64, error) {
    if b == 0 {
        return 0, errors.New("division by zero")
    }
    return a / b, nil
}

func main() {
    result, err := divide(10.0, 0)
    if err != nil {
        fmt.Println("Error:", err)
    } else {
        fmt.Println("Result:", result)
    }
}

def divide(a, b):
    if b == 0:
        return None, "division by zero"
    return a / b, None

result, error = divide(10.0, 0)
if error is not None:
    print("Error:", error)
else:
    print("Result:", result)