Concurrency with Goroutines

Concurrency in Go is achieved using goroutines and channels. Goroutines are lightweight threads managed by the Go runtime, making it easy to run multiple functions concurrently. Here’s a example:

Example: Running Multiple Functions Concurrently

package main

import (
    "fmt"
    "time"
)

func sayHello() {
    for i := 0; i < 5; i++ {
        fmt.Println("Hello")
        time.Sleep(100 * time.Millisecond)
    }
}

func sayWorld() {
    for i := 0; i < 5; i++ {
        fmt.Println("World")
        time.Sleep(100 * time.Millisecond)
    }
}

func main() {

    go sayHello()
    go sayWorld()

    time.Sleep(1 * time.Second)
}

Explanation

1. Goroutines: Use the go keyword to run sayHello and sayWorld functions concurrently.

2. Sleep: Use time.Sleep to keep the main function running long enough for goroutines to complete.

By utilizing goroutines, you can efficiently run multiple tasks concurrently in Go.