Created
December 15, 2021 12:07
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| package main | |
| import ( | |
| "fmt" | |
| "sync" | |
| ) | |
| var wg sync.WaitGroup | |
| func main() { | |
| ch := make(chan int) | |
| sum := make(chan int) | |
| for n := range make([]int, 1000) { | |
| wg.Add(1) | |
| go func(n int, ch chan int) { | |
| ch <- n | |
| wg.Done() | |
| }(n, ch) | |
| } | |
| go Add(ch, sum) | |
| wg.Wait() | |
| close(ch) | |
| fmt.Println(<-sum) | |
| close(sum) | |
| } | |
| func Add(c, sum chan int) { | |
| s := 0 | |
| for { | |
| v, ok := <-c | |
| if !ok { | |
| break | |
| } | |
| s += v | |
| } | |
| sum <- s | |
| } |
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