Goroutines and Concurrency

Prefix a function call with go to run it as a goroutine. main must stay alive long enough to see the result (e.g. a short sleep in demos).

• go worker() schedules worker concurrently.
• Channels coordinate goroutines in real apps.
• Demo sleeps are for learning — production uses sync or channels.

package main

import (
    "fmt"
    "time"
)

func worker() {
    fmt.Println("Worker active!")
}

func main() {
    go worker()
    time.Sleep(50 * time.Millisecond)
}

After you read this chapter, use Write (when available) and Quiz on this page to lock it in — same flow as C, Python, and the other Learn languages.