40 lines
623 B
Go
40 lines
623 B
Go
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package main
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import (
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"fmt"
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"time"
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)
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func printX() {
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for i := 0; i < 100; i++ {
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fmt.Print("X")
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}
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}
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func printY() {
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for i := 0; i < 100; i++ {
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fmt.Print("Y")
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}
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}
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func main() {
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fmt.Println("a goroutine is a **lightweight** thread managed by the go runtime")
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printX()
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fmt.Println()
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printY()
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fmt.Println()
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fmt.Println("you should see first X's then Y's")
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time.Sleep(100 * time.Millisecond)
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fmt.Println()
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fmt.Println()
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go printX()
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go printY()
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fmt.Println("you should see random X's and Y's, this because concurrency")
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time.Sleep(1 * time.Second)
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// wait for prevent main goroutine to terminate
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}
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