How to communicate using Golang coroutines?

Coroutines are used to communicate in Go. Channels are a basic mechanism used to send and receive data between coroutines. Coroutines can send data to or receive data from a channel by using the send (

Use Golang coroutines for communication

In the Go language, coroutines provide a lightweight method of concurrent programming and efficient way. They allow multiple tasks to be executed simultaneously within the context of a single thread, thereby improving application performance. Communication between coroutines is crucial for coordinating tasks and sharing data.

Channels

In Go, channels are a basic mechanism for sending and receiving data between coroutines. A channel is an unbuffered or buffered queue used to deliver values. To create a channel, you can use the following syntax:

ch := make(chan T)

where T is the type of element in the channel.

Send data to the channel

To send data to the channel, you can use the operator:

ch <- data

Receive data from the channel

To receive data from the channel, you can use Operator:

data := <-ch

Practical case: parallel search and

To demonstrate coroutine communication, let us write a program to sum a set of numbers in parallel using coroutines:

package main

import (
    "fmt"
    "sync"
)

func sum(a []int, ch chan int) {
    sum := 0
    for _, v := range a {
        sum += v
    }
    ch <- sum
}

func main() {
    a := []int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
    ch := make(chan int)

    var wg sync.WaitGroup
    for i := 0; i < 5; i++ {
        start := i * 2
        end := start + 2
        wg.Add(1)
        go sum(a[start:end], ch)
    }

    go func() {
        for i := 0; i < 5; i++ {
            total := <-ch
            fmt.Println("Partial sum:", total)
        }
        wg.Done()
    }()

    wg.Wait()
}

In this example, we create 5 coroutines Each coroutine uses channel ch to calculate a partial sum. The main coroutine is responsible for receiving these partial sums and printing them to the console.

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