Thank you Sir
now i understand the difference
2018. május 4., péntek 15:21:49 UTC+2 időpontban k1at...@gmail.com a
következőt írta:
>
> Hi
>
> i dont' understn what is the difference between :
>
> ch := make(chan bool,1) vs. ch := make(chan bool)
>
> this sample works well :
>
> package main
>
> import (
> "fmt"
> "sync"
> )
>
> var x = 0
>
> func increment(wg *sync.WaitGroup, ch chan bool) {
> ch <- true
> x = x + 1
> <-ch
> wg.Done()
> }
> func main() {
> var w sync.WaitGroup
> ch := make(chan bool,1) <------it is OK , but if i
> change to ch := make(chan bool) - it doesn't work
> for i := 0; i < 1000; i++ {
> w.Add(1)
> go increment(&w, ch)
> }
> w.Wait()
> fmt.Println("final value of x", x)
> }
>
> Thank you in advance
>
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