45 lines
871 B
Go
45 lines
871 B
Go
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// https://www.digitalocean.com/community/tutorials/how-to-run-multiple-functions-concurrently-in-go
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// who came up with the idea of making community tutorials. that was a good idea!
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package main
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import (
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"fmt"
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"sync"
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)
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func generateNumbers(total int, ch chan<- int, wg *sync.WaitGroup) {
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defer wg.Done()
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for idx := 1; idx <= total; idx++ {
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fmt.Printf("sending %d to channel\n", idx)
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ch <- idx
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}
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}
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func printInt(idx int, ch <-chan int, wg *sync.WaitGroup) {
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defer wg.Done()
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for num := range ch {
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fmt.Printf("%d: read %d from channel\n", idx, num)
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}
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}
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func main() {
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var wg sync.WaitGroup
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numberChan := make(chan int)
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for idx := 1; idx <= 2; idx++ {
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wg.Add(1)
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go printInt(idx, numberChan, &wg)
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}
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generateNumbers(10, numberChan, &wg)
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close(numberChan)
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fmt.Println("Waiting for goroutines to finish...")
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wg.Wait()
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fmt.Println("Done!")
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}
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